diff --git a/country/management/commands/evaluate_contract_red_flag.py b/country/management/commands/evaluate_contract_red_flag.py
new file mode 100644
index 0000000..7ec5164
--- /dev/null
+++ b/country/management/commands/evaluate_contract_red_flag.py
@@ -0,0 +1,40 @@
+from django.core.management.base import BaseCommand
+
+from country.models import Country, Tender
+from country.tasks import clear_redflag, process_redflag, process_redflag6, process_redflag7
+
+
+class Command(BaseCommand):
+    help = "Compute red flag for specific country"
+
+    def add_arguments(self, parser):
+        parser.add_argument("country", nargs="+", type=str)
+
+    def handle(self, *args, **options):
+        country_code = options["country"][0]
+        country_code = str(country_code).upper()
+        country_list = Country.objects.exclude(country_code_alpha_2="gl").values_list(
+            "country_code_alpha_2", flat=True
+        )
+
+        if country_code not in country_list:
+            self.stderr.write("Country code is invalid.")
+            return
+
+        country = Country.objects.get(country_code_alpha_2=country_code)
+
+        self.stdout.write(f"Processing Red flag for {country.name}")
+
+        country_tenders = Tender.objects.filter(
+            country_id=country.id, supplier__isnull=False, buyer__isnull=False
+        ).values("id", "buyer__buyer_name", "supplier__supplier_name", "supplier__supplier_address")
+
+        for tender in country_tenders:
+            tender_id = tender["id"]
+            self.stdout.write("Created task for id :" + str(tender_id))
+            clear_redflag.apply_async(args=(tender_id,), queue="covid19")
+            process_redflag6.apply_async(args=(tender_id,), queue="covid19")
+            process_redflag7.apply_async(args=(tender_id,), queue="covid19")
+            process_redflag.apply_async(args=(tender_id,), queue="covid19")
+
+        self.stdout.write("Done")
diff --git a/country/management/commands/import_red_flag.py b/country/management/commands/import_red_flag.py
deleted file mode 100644
index 78bdc77..0000000
--- a/country/management/commands/import_red_flag.py
+++ /dev/null
@@ -1,30 +0,0 @@
-from django.core.management.base import BaseCommand
-
-from country.models import Tender
-from country.tasks import clear_redflag, process_redflag, process_redflag6, process_redflag7
-
-
-class Command(BaseCommand):
-    def handle(self, *args, **kwargs):
-        self.stdout.write("Removing all the relations of Red flag")
-        tenders = Tender.objects.all()
-        for tender in tenders:
-            id = tender.id
-            clear_redflag.apply_async(args=(id,), queue="covid19")
-
-        self.stdout.write("All cleared")
-        self.stdout.write("Processing Red Flag in tender")
-
-        tender_instance = Tender.objects.filter(supplier__isnull=False, buyer__isnull=False).values(
-            "id", "buyer__buyer_name", "supplier__supplier_name", "supplier__supplier_address"
-        )
-        for tender in tender_instance:
-            id = tender["id"]
-            process_redflag7.apply_async(args=(id, tender), queue="covid19")
-            process_redflag6.apply_async(args=(id, tender), queue="covid19")
-
-        for tender in tenders:
-            id = tender.id
-            process_redflag.apply_async(args=(id,), queue="covid19")
-            self.stdout.write("Created task for id :" + str(id))
-        self.stdout.write("Done")
diff --git a/country/tests/commands/test_fetch_covid_active_cases.py b/country/tests/commands/test_fetch_covid_active_cases.py
index 282b6d0..7ffaffa 100644
--- a/country/tests/commands/test_fetch_covid_active_cases.py
+++ b/country/tests/commands/test_fetch_covid_active_cases.py
@@ -20,6 +20,7 @@ def assertCommand(self, *args, expected_out="", expected_err="", **kwargs):
         self.assertEqual(out.getvalue(), dedent(expected_out))
 
     def test_command(self):
+        Country.objects.all().delete()
         Country.objects.create(name="Global", country_code="GLO", country_code_alpha_2="gl", currency="USD")
         Country.objects.create(name="Kenya", country_code="KEN", country_code_alpha_2="KE", currency="KES")
 
diff --git a/visualization/tests/test_views.py b/visualization/tests/test_views.py
index eb23b8c..3df1313 100644
--- a/visualization/tests/test_views.py
+++ b/visualization/tests/test_views.py
@@ -1,63 +1,120 @@
+from django.core.management import call_command
 from django.test import TestCase
 from django.urls import reverse
 from rest_framework import status
 
+from content.models import CountryPartner
+from country.models import Buyer, Country, Language, Supplier, Tender, Topic
+
+
+def setUpModule():
+    call_command("loaddata", "country", "redflag", "equitycategory", "equitykeywords")
+    Language.objects.create(
+        name="english",
+        code="en",
+    )
+    Topic.objects.create(title="corona virus")
+    supplier = Supplier.objects.create(
+        supplier_id="1",
+        supplier_name="sample supplier",
+        supplier_address="kathmandu",
+    )
+
+    buyer = Buyer.objects.create(
+        buyer_id="1",
+        buyer_name="sample buyer",
+        buyer_address="kathmandu",
+    )
+
+    Tender.objects.create(
+        country=Country.objects.all().first(),
+        supplier=supplier,
+        buyer=buyer,
+        contract_id=1,
+        contract_date="2021-01-01",
+        procurement_procedure="open",
+        status="active",
+        link_to_contract="http://test.com",
+        link_to_tender="http://test.com",
+        data_source="http://test.com",
+        no_of_bidders=1,
+        contract_title="test",
+        contract_value_local=1.0,
+        contract_value_usd=1.0,
+        contract_desc="test description",
+        tender_value_local=1.0,
+        tender_value_usd=1.0,
+        award_value_local=1.0,
+        award_value_usd=1.0,
+    )
+
+    CountryPartner.objects.create(
+        name="united kingdom",
+        description="country description",
+        country=Country.objects.all().first(),
+        email="country@email.com",
+        website="example.com",
+        logo="country/partner/logo/gl.jpg",
+    )
+
 
 class VisualizationViewTest(TestCase):
     def setUp(self):
-        self.total_contract_list_url = "total_contracts"
-        self.total_contracts_url = "total_contracts"
-        self.total_spending_url = "total_spending"
         self.average_bids_url = "average_bids"
-        self.world_map_race_url = "world_map_race"
-        self.top_suppliers_url = "top_suppliers"
-        self.top_buyers_url = "top_buyers"
-        self.direct_open_url = "direct_open"
+        self.buyer_detail_url = "buyer_detail"
+        self.buyer_summary_url = "buyer_summary"
+        self.buyer_trend_url = "buyer_trend"
+        self.contract_red_flags_url = "contract_red_flags"
         self.contract_status_url = "contract_status"
-        self.quantity_correlation_url = "quantity_correlation"
-        self.monopolization_url = "monopolization"
-        self.country_suppliers_url = "country_suppliers"
-        self.country_map_url = "country_map"
-        self.world_map_url = "world_map"
         self.country_map_api_url = "country_map_api"
-        self.global_suppliers_url = "global_suppliers"
-        self.product_distribution_url = "product_distribution"
-        self.equity_indicators_url = "equity_indicators"
-        self.product_timeline_url = "product_timeline"
-        self.product_timeline_race_url = "product_timeline_race"
-        self.supplier_detail_url = "supplier_detail"
-        self.buyer_detail_url = "buyer_detail"
+        self.country_map_url = "country_map"
         self.country_partners_url = "country_partners"
+        self.country_suppliers_url = "country_suppliers"
         self.data_providers_url = "data_providers"
-        self.buyer_summary_url = "buyer_summary"
-        self.supplier_summary_url = "supplier_summary"
-        self.filter_parameters_url = "filter_parameters"
-        self.product_summary_url = "product_summary"
+        self.direct_open_contract_trend_url = "direct_open_contract_trend"
+        self.direct_open_url = "direct_open"
+        self.equity_indicators_url = "equity_indicators"
         self.equity_summary_url = "equity_summary"
-        self.products_url = "products"
-        self.filters_parameters_suppliers_url = "filters_parameters_suppliers"
+        self.filter_parameters_url = "filter_parameters"
         self.filters_parameters_buyers_url = "filters_parameters_buyers"
         self.filters_parameters_static_url = "filters_parameters_static"
+        self.filters_parameters_suppliers_url = "filters_parameters_suppliers"
+        self.global_suppliers_url = "global_suppliers"
+        self.monopolization_url = "monopolization"
+        self.product_distribution_url = "product_distribution"
+        self.product_flow_view_url = "product_flow_view"
         self.product_spending_comparison_url = "product_spending_comparison"
-        self.buyer_trend_url = "buyer_trend"
-        self.supplier_trend_url = "supplier_trend"
-        self.direct_open_contract_trend_url = "direct_open_contract_trend"
-        self.contract_red_flags_url = "contract_red_flags"
+        self.product_summary_url = "product_summary"
+        self.product_timeline_race_url = "product_timeline_race"
+        self.product_timeline_url = "product_timeline"
+        self.products_url = "products"
+        self.quantity_correlation_url = "quantity_correlation"
         self.red_flag_summary_url = "red_flag_summary"
-        self.product_flow_view_url = "product_flow_view"
+        self.supplier_detail_url = "supplier_detail"
         self.supplier_flow_view_url = "supplier_flow_view"
+        self.supplier_summary_url = "supplier_summary"
+        self.supplier_trend_url = "supplier_trend"
+        self.top_buyers_url = "top_buyers"
+        self.top_suppliers_url = "top_suppliers"
+        self.total_contract_list_url = "total_contracts"
+        self.total_contracts_url = "total_contracts"
+        self.total_spending_url = "total_spending"
+        self.world_map_race_url = "world_map_race"
+        self.world_map_url = "world_map"
 
     def test_total_contracts_GET(self):
-        response = self.client.get(reverse(self.total_contracts_url))
+        url = "%s?country=KE&buyer=1&supplier=1" % reverse(self.total_contracts_url)
+        response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_total_spending_GET(self):
-        url = "%s?country=GB&buyer=1&supplier=1" % reverse(self.total_spending_url)
+        url = "%s?country=KE&buyer=1&supplier=1" % reverse(self.total_spending_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_average_bids_GET(self):
-        response = self.client.get(reverse(self.average_bids_url))
+        url = "%s?country=KE&buyer=1" % reverse(self.average_bids_url)
+        response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_world_map_race_GET(self):
@@ -73,31 +130,32 @@ def test_top_buyers_GET(self):
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_direct_open_GET(self):
-        response = self.client.get(reverse(self.direct_open_url))
+        url = "%s?country=KE&buyer=1&supplier=1" % reverse(self.direct_open_url)
+        response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_contract_status_GET(self):
-        url = "%s?country=GB&buyer=1" % reverse(self.contract_status_url)
+        url = "%s?country=KE&buyer=1" % reverse(self.contract_status_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_quantity_correlation_GET(self):
-        url = "%s?country=GB" % reverse(self.quantity_correlation_url)
+        url = "%s?country=KE" % reverse(self.quantity_correlation_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_monopolization_GET(self):
-        url = "%s?country=GB&buyer=1" % reverse(self.monopolization_url)
+        url = "%s?country=KE&buyer=1" % reverse(self.monopolization_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_country_suppliers_GET(self):
-        url = "%s?country=GB" % reverse(self.country_suppliers_url)
+        url = "%s?country=KE" % reverse(self.country_suppliers_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_country_map_GET(self):
-        url = "%s?country=GB" % reverse(self.country_map_url)
+        url = "%s?country=KE" % reverse(self.country_map_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
@@ -107,26 +165,31 @@ def test_world_map_GET(self):
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_country_map_api_GET(self):
-        url = "%s?country=GB" % reverse(self.country_map_api_url)
+        url = "%s?country=KE" % reverse(self.country_map_api_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
+    def test_invalid_country_map_api_GET(self):
+        url = "%s?country=AB" % reverse(self.country_map_api_url)
+        response = self.client.get(url)
+        self.assertEquals(response.status_code, status.HTTP_500_INTERNAL_SERVER_ERROR)
+
     def test_global_suppliers_GET(self):
         response = self.client.get(reverse(self.global_suppliers_url))
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_product_distribution_GET(self):
-        url = "%s?country=GB&buyer=1" % reverse(self.product_distribution_url)
+        url = "%s?country=KE&buyer=1" % reverse(self.product_distribution_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_equity_indicators_GET(self):
-        url = "%s?country=GB&buyer=1" % reverse(self.equity_indicators_url)
+        url = "%s?country=KE&buyer=1" % reverse(self.equity_indicators_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_product_timeline_GET(self):
-        url = "%s?country=GB&buyer=1&supplier=1" % reverse(self.product_timeline_url)
+        url = "%s?country=KE&buyer=1&supplier=1" % reverse(self.product_timeline_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
@@ -139,26 +202,30 @@ def test_supplier_detail_GET(self):
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_buyer_detail_GET(self):
-        response = self.client.get(reverse(self.buyer_detail_url, args=["1"]))
+        response = self.client.get(reverse(self.buyer_detail_url, args=[1]))
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
+    def test_buyer_detail_failed_GET(self):
+        response = self.client.get(reverse(self.buyer_detail_url, args=[99999]))
+        self.assertEquals(response.status_code, status.HTTP_500_INTERNAL_SERVER_ERROR)
+
     def test_country_partners_GET(self):
-        url = "%s?country=GB" % reverse(self.country_partners_url)
+        url = "%s?country=KE" % reverse(self.country_partners_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_data_providers_GET(self):
-        url = "%s?country=GB" % reverse(self.data_providers_url)
+        url = "%s?country=KE" % reverse(self.data_providers_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_buyer_summary_GET(self):
-        url = "%s?country=GB" % reverse(self.buyer_summary_url)
+        url = "%s?country=gl" % reverse(self.buyer_summary_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_supplier_summary_GET(self):
-        url = "%s?country=GB" % reverse(self.supplier_summary_url)
+        url = "%s?country=KE" % reverse(self.supplier_summary_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
@@ -167,25 +234,28 @@ def test_filter_parameters_GET(self):
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_product_summary_GET(self):
-        response = self.client.get(reverse(self.product_summary_url))
+        url = "%s?country=KE" % reverse(self.product_summary_url)
+        response = self.client.get(url)
+        print(response.json())
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_equity_summary_GET(self):
-        url = "%s?country=GB" % reverse(self.equity_summary_url)
+        url = "%s?country=KE" % reverse(self.equity_summary_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_products_GET(self):
-        response = self.client.get(reverse(self.products_url))
+        url = "%s?country=KE&buyer=1" % reverse(self.products_url)
+        response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_filters_parameters_suppliers_GET(self):
-        url = "%s?country=GB&buyer=1" % reverse(self.filters_parameters_suppliers_url)
+        url = "%s?country=KE&buyer=1" % reverse(self.filters_parameters_suppliers_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_filters_parameters_buyers_GET(self):
-        url = "%s?country=GB&supplier=1" % reverse(self.filters_parameters_buyers_url)
+        url = "%s?country=KE&supplier=1" % reverse(self.filters_parameters_buyers_url)
         response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
@@ -211,7 +281,8 @@ def test_direct_open_contract_trend_GET(self):
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_contract_red_flags_GET(self):
-        response = self.client.get(reverse(self.contract_red_flags_url))
+        url = "%s?country=KE&buyer=1&supplier=1&product=1" % reverse(self.contract_red_flags_url)
+        response = self.client.get(url)
         self.assertEquals(response.status_code, status.HTTP_200_OK)
 
     def test_red_flag_summary_GET(self):
diff --git a/visualization/urls.py b/visualization/urls.py
index 0bb8c10..8cb1abb 100644
--- a/visualization/urls.py
+++ b/visualization/urls.py
@@ -33,10 +33,10 @@
     path("equity-summary/", views.EquitySummaryView.as_view(), name="equity_summary"),
     path("products/", views.ProductTableView.as_view(), name="products"),
     path(
-        "filters-parameters/suppliers/", views.FilterParametersSuppliers.as_view(), name="filters_parameters_suppliers"
+        "filter-parameters/suppliers/", views.FilterParametersSuppliers.as_view(), name="filters_parameters_suppliers"
     ),
-    path("filters-parameters/buyers/", views.FilterParametersBuyers.as_view(), name="filters_parameters_buyers"),
-    path("filters-parameters/static/", views.FilterParametersStatic.as_view(), name="filters_parameters_static"),
+    path("filter-parameters/buyers/", views.FilterParametersBuyers.as_view(), name="filters_parameters_buyers"),
+    path("filter-parameters/static/", views.FilterParametersStatic.as_view(), name="filters_parameters_static"),
     path(
         "product-spending-comparison/", views.ProductSpendingComparison.as_view(), name="product_spending_comparison"
     ),
diff --git a/visualization/views/buyer_profile_view.py b/visualization/views/buyer_profile_view.py
index a7230ee..0c207bf 100644
--- a/visualization/views/buyer_profile_view.py
+++ b/visualization/views/buyer_profile_view.py
@@ -2,9 +2,10 @@
 from django.http import JsonResponse
 from django.utils.decorators import method_decorator
 from django.views.decorators.cache import cache_page
+from rest_framework import status
 from rest_framework.views import APIView
 
-from country.models import Buyer, Tender
+from country.models import Buyer
 from visualization.helpers.general import page_expire_period
 
 
@@ -12,28 +13,29 @@ class BuyerProfileView(APIView):
     @method_decorator(cache_page(page_expire_period()))
     def get(self, request, *args, **kwargs):
         pk = self.kwargs["pk"]
-        data = {}
         try:
             instance = Buyer.objects.get(id=pk)
+            tenders = instance.tenders
             buyer_detail = (
-                Tender.objects.filter(buyer_id=pk)
-                .values("country__name", "country__country_code_alpha_2")
+                tenders.values("country__name", "country__country_code_alpha_2")
                 .annotate(
-                    total_usd=Sum("goods_services__contract_value_usd"),
-                    total_local=Sum("goods_services__contract_value_local"),
+                    total_usd=Sum("contract_value_usd"),
+                    total_local=Sum("contract_value_local"),
                 )
+                .first()
             )
-            tender_count = Tender.objects.filter(buyer_id=pk).count()
-            data["name"] = instance.buyer_name
-            data["id"] = pk
-            data["code"] = instance.buyer_id
-            data["address"] = instance.buyer_address
-            data["amount_usd"] = buyer_detail[0]["total_usd"]
-            data["amount_local"] = buyer_detail[0]["total_local"]
-            data["tender_count"] = tender_count
-            data["country_code"] = buyer_detail[0]["country__country_code_alpha_2"]
-            data["country_name"] = buyer_detail[0]["country__name"]
-            return JsonResponse(data, safe=False)
-        except Exception:
-            data["error"] = "Enter valid ID"
-            return JsonResponse(data, safe=False)
+            data = {
+                "name": instance.buyer_name,
+                "id": pk,
+                "code": instance.buyer_id,
+                "address": instance.buyer_address,
+                "amount_usd": buyer_detail.get("total_usd", 0),
+                "amount_local": buyer_detail.get("total_local", 0),
+                "tender_count": tenders.distinct().count(),
+                "country_code": buyer_detail.get("country__country_code_alpha_2", ""),
+                "country_name": buyer_detail.get("country__name", ""),
+            }
+            return JsonResponse(data, safe=False, status=status.HTTP_200_OK)
+        except Exception as E:
+            error = {"error": str(E)}
+            return JsonResponse(error, safe=False, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
diff --git a/visualization/views/buyer_summary_view.py b/visualization/views/buyer_summary_view.py
index dc0c14b..ca5541a 100644
--- a/visualization/views/buyer_summary_view.py
+++ b/visualization/views/buyer_summary_view.py
@@ -40,9 +40,7 @@ def get(self, request):
             .aggregate(total=Count("buyer"))
         )
         for details in buyer_details:
-            data = {}
-            data["buyer_count"] = details["count"]
-            data["month"] = details["month"]
+            data = {"buyer_count": details["count"], "month": details["month"]}
             trend.append(data)
         try:
             dates_in_details = [i["month"] for i in buyer_details]
diff --git a/visualization/views/country_map_view.py b/visualization/views/country_map_view.py
index c704afd..94a1a6b 100644
--- a/visualization/views/country_map_view.py
+++ b/visualization/views/country_map_view.py
@@ -2,6 +2,7 @@
 from django.http import JsonResponse
 from django.utils.decorators import method_decorator
 from django.views.decorators.cache import cache_page
+from rest_framework import status
 from rest_framework.views import APIView
 
 from country.models import Country, Tender
@@ -15,20 +16,22 @@ def get(self, request):
         try:
             country_instance = Country.objects.get(country_code_alpha_2=country)
         except Exception:
-            return JsonResponse({"result": "Invalid Alpha Code"})
+            return JsonResponse({"result": "Invalid Alpha Code"}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
         if country is not None and country_instance is not None:
             tender_instance = Tender.objects.filter(country__country_code_alpha_2=country).aggregate(
                 total_usd=Sum("goods_services__contract_value_usd"),
                 total_local=Sum("goods_services__contract_value_local"),
             )
             count = Tender.objects.filter(country__country_code_alpha_2=country).count()
-            final = {}
-            final["country_code"] = country_instance.country_code_alpha_2
-            final["country"] = country_instance.name
-            final["country_continent"] = country_instance.continent
-            final["amount_usd"] = tender_instance["total_usd"]
-            final["amount_local"] = tender_instance["total_local"]
-            final["tender_count"] = count
+            final = {
+                "country_code": country_instance.country_code_alpha_2,
+                "country": country_instance.name,
+                "country_continent": country_instance.continent,
+                "amount_usd": tender_instance["total_usd"],
+                "amount_local": tender_instance["total_local"],
+                "tender_count": count,
+            }
+            return JsonResponse(final)
         else:
-            final = {"result": "Invalid Alpha Code"}
-        return JsonResponse(final)
+            error = {"result": "Invalid Alpha Code"}
+        return JsonResponse(error, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
diff --git a/visualization/views/country_partner_view.py b/visualization/views/country_partner_view.py
index e779dde..66cd8c8 100644
--- a/visualization/views/country_partner_view.py
+++ b/visualization/views/country_partner_view.py
@@ -17,18 +17,19 @@ def get(self, request):
         try:
             data_provider = CountryPartner.objects.filter(**filter_args)
         except Exception:
-            data_provider = [{"error": "Country partner doesnot exist for this country"}]
+            data_provider = [{"error": "Country partner does not exist for this country"}]
         result = []
         if data_provider:
             for i in data_provider:
-                data = {}
-                data["name"] = i.name
-                data["description"] = i.description
-                data["email"] = i.email
-                data["website"] = i.website
-                data["logo"] = str(i.logo)
-                data["order"] = i.order
-                data["country"] = str(i.country)
+                data = {
+                    "name": i.name,
+                    "description": i.description,
+                    "email": i.email,
+                    "website": i.website,
+                    "logo": str(i.logo),
+                    "order": i.order,
+                    "country": str(i.country),
+                }
                 result.append(data)
         else:
             result = {"error": "Country Partner not found for this country"}
diff --git a/visualization/views/data_provider_view.py b/visualization/views/data_provider_view.py
index 3287222..2673ce1 100644
--- a/visualization/views/data_provider_view.py
+++ b/visualization/views/data_provider_view.py
@@ -17,16 +17,17 @@ def get(self, request):
         try:
             data_provider = DataProvider.objects.filter(**filter_args)
         except Exception:
-            data_provider = [{"error": "Data Provider doesnot exist for this country"}]
+            data_provider = [{"error": "Data Provider does not exist for this country"}]
         result = []
         if data_provider:
             for i in data_provider:
-                data = {}
-                data["name"] = i.name
-                data["country"] = str(i.country)
-                data["website"] = i.website
-                data["logo"] = str(i.logo)
-                data["remark"] = i.remark
+                data = {
+                    "name": i.name,
+                    "country": str(i.country),
+                    "website": i.website,
+                    "logo": str(i.logo),
+                    "remark": i.remark,
+                }
                 result.append(data)
         else:
             result = {"error": "Data Provider not found for this country"}
diff --git a/visualization/views/equity_summary_view.py b/visualization/views/equity_summary_view.py
index 72d33a1..05684a5 100644
--- a/visualization/views/equity_summary_view.py
+++ b/visualization/views/equity_summary_view.py
@@ -30,12 +30,13 @@ def get(self, request):
             .order_by("-month")
         )
         for detail in equity_summary:
-            data = {}
-            data["amount_local"] = detail["local"]
-            data["amount_usd"] = detail["usd"]
-            data["equity"] = detail["equity_category__category_name"]
-            data["equity_category_id"] = detail["equity_category"]
-            data["month"] = detail["month"]
-            data["tender_count"] = detail["total"]
+            data = {
+                "amount_local": detail["local"],
+                "amount_usd": detail["usd"],
+                "equity": detail["equity_category__category_name"],
+                "equity_category_id": detail["equity_category"],
+                "month": detail["month"],
+                "tender_count": detail["total"],
+            }
             result.append(data)
         return JsonResponse(result, safe=False)
diff --git a/visualization/views/filter_parameters_buyers.py b/visualization/views/filter_parameters_buyers.py
index 087bf8e..da0d906 100644
--- a/visualization/views/filter_parameters_buyers.py
+++ b/visualization/views/filter_parameters_buyers.py
@@ -3,7 +3,7 @@
 from django.views.decorators.cache import cache_page
 from rest_framework.views import APIView
 
-from country.models import Country, Tender
+from country.models import Tender
 from visualization.helpers.general import page_expire_period
 from visualization.views.lib.general import add_filter_args
 
@@ -11,28 +11,31 @@
 class FilterParametersBuyers(APIView):
     @method_decorator(cache_page(page_expire_period()))
     def get(self, request):
-        filter_args = {}
-        result = []
-        country = self.request.GET.get("country", None)
-        supplier = self.request.GET.get("supplier", None)
-        if supplier:
-            filter_args = add_filter_args("supplier", supplier, filter_args)
+        country_code = self.request.GET.get("country", None)
+        supplier_id = self.request.GET.get("supplier", None)
+
+        filter_args = {"buyer__isnull": False}
+
+        if supplier_id:
+            filter_args = add_filter_args("supplier", supplier_id, filter_args)
+
+        if country_code:
+            country_code = str(country_code).upper()
+            filter_args["country__country_code_alpha_2"] = country_code
+
         try:
-            if country:
-                filter_args["country__country_code_alpha_2"] = country
-                instance = Country.objects.get(country_code_alpha_2=country)
-                country_code = instance.country_code_alpha_2
-            filter_args["buyer__isnull"] = False
             buyers = Tender.objects.filter(**filter_args).values("buyer__id", "buyer__buyer_name").distinct()
+
+            result = []
             for buyer in buyers:
-                data = {}
-                data["id"] = buyer["buyer__id"]
-                data["name"] = buyer["buyer__buyer_name"]
-                if country:
+                data = {"id": buyer["buyer__id"], "name": buyer["buyer__buyer_name"]}
+
+                if country_code:
                     data["country_code"] = country_code
-                else:
-                    data["country_code"] = "USD"
+
                 result.append(data)
+
             return JsonResponse(result, safe=False)
+
         except Exception:
-            return JsonResponse([{"error": "Country code doest not exists"}], safe=False)
+            return JsonResponse([{"error": "Country code does not exists"}], safe=False)
diff --git a/visualization/views/filter_parameters_suppliers.py b/visualization/views/filter_parameters_suppliers.py
index 7eaec6a..23d8a04 100644
--- a/visualization/views/filter_parameters_suppliers.py
+++ b/visualization/views/filter_parameters_suppliers.py
@@ -3,7 +3,7 @@
 from django.views.decorators.cache import cache_page
 from rest_framework.views import APIView
 
-from country.models import Country, Tender
+from country.models import Tender
 from visualization.helpers.general import page_expire_period
 from visualization.views.lib.general import add_filter_args
 
@@ -11,30 +11,33 @@
 class FilterParametersSuppliers(APIView):
     @method_decorator(cache_page(page_expire_period()))
     def get(self, request):
-        filter_args = {}
-        result = []
-        country = self.request.GET.get("country", None)
+        country_code = self.request.GET.get("country", None)
         buyer = self.request.GET.get("buyer", None)
+
+        filter_args = {"supplier__isnull": False}
+
         if buyer:
             filter_args = add_filter_args("buyer", buyer, filter_args)
+
+        if country_code:
+            filter_args["country__country_code_alpha_2"] = country_code
+
         try:
-            if country:
-                filter_args["country__country_code_alpha_2"] = country
-                instance = Country.objects.get(country_code_alpha_2=country)
-                country_code = instance.country_code_alpha_2
-            filter_args["supplier__isnull"] = False
             suppliers = (
                 Tender.objects.filter(**filter_args).values("supplier__id", "supplier__supplier_name").distinct()
             )
+
+            result = []
+
             for supplier in suppliers:
-                data = {}
-                data["id"] = supplier["supplier__id"]
-                data["name"] = supplier["supplier__supplier_name"]
-                if country:
+                data = {"id": supplier["supplier__id"], "name": supplier["supplier__supplier_name"]}
+
+                if country_code:
                     data["country_code"] = country_code
-                else:
-                    data["country_code"] = "USD"
+
                 result.append(data)
+
             return JsonResponse(result, safe=False)
+
         except Exception:
-            return JsonResponse([{"error": "Country code doest not exists"}], safe=False)
+            return JsonResponse([{"error": "Country code does not exists"}], safe=False)
diff --git a/visualization/views/product_distribution_view.py b/visualization/views/product_distribution_view.py
index 04d381e..d72edeb 100644
--- a/visualization/views/product_distribution_view.py
+++ b/visualization/views/product_distribution_view.py
@@ -17,10 +17,10 @@ def get(self, request):
         if country:
             filter_args["country__country_code_alpha_2"] = country
         if buyer:
-            if buyer != "notnull":
-                filter_args["contract__buyer__buyer_id"] = buyer
-            else:
+            filter_args["contract__buyer__buyer_id"] = buyer
+            if buyer == "notnull":
                 filter_args["contract__buyer__isnull"] = False
+
         result = []
         goods_services = (
             GoodsServices.objects.filter(**filter_args)
@@ -32,14 +32,15 @@ def get(self, request):
             )
         )
         for goods in goods_services:
-            data = {}
-            data["product_name"] = goods["goods_services_category__category_name"]
-            data["product_id"] = goods["goods_services_category__id"]
+            data = {
+                "product_name": goods["goods_services_category__category_name"],
+                "product_id": goods["goods_services_category__id"],
+                "local_currency_code": "USD",
+            }
             if country:
                 instance = Country.objects.get(country_code_alpha_2=country)
                 data["local_currency_code"] = instance.currency
-            else:
-                data["local_currency_code"] = "USD"
+
             data["tender_count"] = goods["tender"]
             data["amount_local"] = goods["local"]
             data["amount_usd"] = goods["usd"]
diff --git a/visualization/views/product_summary_view.py b/visualization/views/product_summary_view.py
index 54e80ab..29f4c17 100644
--- a/visualization/views/product_summary_view.py
+++ b/visualization/views/product_summary_view.py
@@ -33,12 +33,13 @@ def get(self, request):
             )
         )
         for tender in tenders_assigned:
-            data = {}
-            data["amount_local"] = tender["local"]
-            data["amount_usd"] = tender["usd"]
-            data["local_currency_code"] = currency
-            data["product_id"] = tender["goods_services__goods_services_category__id"]
-            data["product_name"] = tender["goods_services__goods_services_category__category_name"]
-            data["tender_count"] = tender["count"]
+            data = {
+                "amount_local": tender["local"],
+                "amount_usd": tender["usd"],
+                "local_currency_code": currency,
+                "product_id": tender["goods_services__goods_services_category__id"],
+                "product_name": tender["goods_services__goods_services_category__category_name"],
+                "tender_count": tender["count"],
+            }
             result.append(data)
         return JsonResponse(result, safe=False)
diff --git a/visualization/views/product_table_view.py b/visualization/views/product_table_view.py
index 061fe5e..563ffc4 100644
--- a/visualization/views/product_table_view.py
+++ b/visualization/views/product_table_view.py
@@ -31,13 +31,14 @@ def get(self, request):
             )
         )
         for product in product_tables:
-            data = {}
-            data["amount_local"] = product["local"]
-            data["amount_usd"] = product["usd"]
-            data["product_id"] = product["goods_services__goods_services_category__id"]
-            data["product_name"] = product["goods_services__goods_services_category__category_name"]
-            data["buyer_count"] = product["buyer"]
-            data["supplier_count"] = product["supplier"]
-            data["tender_count"] = product["total"]
+            data = {
+                "amount_local": product["local"],
+                "amount_usd": product["usd"],
+                "product_id": product["goods_services__goods_services_category__id"],
+                "product_name": product["goods_services__goods_services_category__category_name"],
+                "buyer_count": product["buyer"],
+                "supplier_count": product["supplier"],
+                "tender_count": product["total"],
+            }
             result.append(data)
         return JsonResponse(result, safe=False)
diff --git a/visualization/views/product_timeline_race_view.py b/visualization/views/product_timeline_race_view.py
index 650ccdc..839b089 100644
--- a/visualization/views/product_timeline_race_view.py
+++ b/visualization/views/product_timeline_race_view.py
@@ -40,9 +40,7 @@ def get(self, request):
         for tender in tenders:
             end_date = tender["month"] + dateutil.relativedelta.relativedelta(months=1)
             start_date = tender["month"]
-            result = {}
-            result["month"] = str(start_date.year) + "-" + str(start_date.month)
-            result["details"] = []
+            result = {"month": str(start_date.year) + "-" + str(start_date.month), "details": []}
             for category in categories:
                 data = {}
                 if country:
diff --git a/visualization/views/product_timeline_view.py b/visualization/views/product_timeline_view.py
index 6e419fa..b0aba2e 100644
--- a/visualization/views/product_timeline_view.py
+++ b/visualization/views/product_timeline_view.py
@@ -46,14 +46,15 @@ def get(self, request):
                     .order_by("-month")
                 )
                 for tender in tenders_assigned:
-                    data = {}
-                    data["amount_local"] = tender["local"]
-                    data["amount_usd"] = tender["usd"]
-                    data["date"] = tender["month"]
-                    data["local_currency_code"] = currency
-                    data["product_id"] = tender["goods_services__goods_services_category__id"]
-                    data["product_name"] = tender["goods_services__goods_services_category__category_name"]
-                    data["tender_count"] = tender["count"]
+                    data = {
+                        "amount_local": tender["local"],
+                        "amount_usd": tender["usd"],
+                        "date": tender["month"],
+                        "local_currency_code": currency,
+                        "product_id": tender["goods_services__goods_services_category__id"],
+                        "product_name": tender["goods_services__goods_services_category__category_name"],
+                        "tender_count": tender["count"],
+                    }
                     result.append(data)
                 return JsonResponse(result, safe=False)
             except Exception:
@@ -89,4 +90,3 @@ def get(self, request):
                 return JsonResponse(result, safe=False)
             except Exception:
                 return JsonResponse([{"error": "Invalid country_code"}], safe=False)
-            return JsonResponse(data, safe=False)
diff --git a/visualization/views/quantity_correlation.py b/visualization/views/quantity_correlation.py
index 42d736e..7f126c4 100644
--- a/visualization/views/quantity_correlation.py
+++ b/visualization/views/quantity_correlation.py
@@ -56,14 +56,15 @@ def get(self, request):
             except Exception:
                 active_case_count = 0
                 death_count = 0
-            a = {}
-            a["active_cases"] = active_case_count
-            a["death_cases"] = death_count
-            a["amount_local"] = i["local"] if "local" in i else ""
-            a["amount_usd"] = i["usd"]
-            a["local_currency_code"] = i["country__currency"] if "country__currency" in i else ""
-            a["month"] = i["month"]
-            a["tender_count"] = i["count"]
+            a = {
+                "active_cases": active_case_count,
+                "death_cases": death_count,
+                "amount_local": i["local"] if "local" in i else "",
+                "amount_usd": i["usd"],
+                "local_currency_code": i["country__currency"] if "country__currency" in i else "",
+                "month": i["month"],
+                "tender_count": i["count"],
+            }
             contracts_quantity_list.append(a)
 
         return JsonResponse(contracts_quantity_list, safe=False)
diff --git a/visualization/views/red_flag_summary_view.py b/visualization/views/red_flag_summary_view.py
index 1df9c80..d7d119e 100644
--- a/visualization/views/red_flag_summary_view.py
+++ b/visualization/views/red_flag_summary_view.py
@@ -31,12 +31,13 @@ def get(self, request):
         )
         for detail in equity_summary:
             if detail["red_flag__implemented"]:
-                data = {}
-                data["amount_local"] = detail["local"]
-                data["amount_usd"] = detail["usd"]
-                data["red_flag"] = detail["red_flag__title"]
-                data["red_flag_id"] = detail["red_flag"]
-                data["month"] = detail["month"]
-                data["tender_count"] = detail["total"]
+                data = {
+                    "amount_local": detail["local"],
+                    "amount_usd": detail["usd"],
+                    "red_flag": detail["red_flag__title"],
+                    "red_flag_id": detail["red_flag"],
+                    "month": detail["month"],
+                    "tender_count": detail["total"],
+                }
                 result.append(data)
         return JsonResponse(result, safe=False)
diff --git a/visualization/views/supplier_profile_view.py b/visualization/views/supplier_profile_view.py
index 3ae9e09..9a190fa 100644
--- a/visualization/views/supplier_profile_view.py
+++ b/visualization/views/supplier_profile_view.py
@@ -12,7 +12,7 @@ class SupplierProfileView(APIView):
     @method_decorator(cache_page(page_expire_period()))
     def get(self, request, *args, **kwargs):
         pk = self.kwargs["pk"]
-        data = {}
+
         try:
             instance = Supplier.objects.get(id=pk)
             supplier_detail = (
@@ -24,16 +24,18 @@ def get(self, request, *args, **kwargs):
                 )
             )
             tender_count = Tender.objects.filter(supplier_id=pk).count()
-            data["name"] = instance.supplier_name
-            data["id"] = pk
-            data["code"] = instance.supplier_id
-            data["address"] = instance.supplier_address
-            data["amount_usd"] = supplier_detail[0]["total_usd"]
-            data["amount_local"] = supplier_detail[0]["total_local"]
-            data["tender_count"] = tender_count
-            data["country_code"] = supplier_detail[0]["country__country_code_alpha_2"]
-            data["country_name"] = supplier_detail[0]["country__name"]
+            data = {
+                "name": instance.supplier_name,
+                "id": pk,
+                "code": instance.supplier_id,
+                "address": instance.supplier_address,
+                "amount_usd": supplier_detail[0]["total_usd"],
+                "amount_local": supplier_detail[0]["total_local"],
+                "tender_count": tender_count,
+                "country_code": supplier_detail[0]["country__country_code_alpha_2"],
+                "country_name": supplier_detail[0]["country__name"],
+            }
             return JsonResponse(data, safe=False)
         except Exception:
-            data["error"] = "Enter valid ID"
-            return JsonResponse(data, safe=False)
+            error = {"error": "Enter valid ID"}
+            return JsonResponse(error, safe=False)
diff --git a/visualization/views/supplier_summary_view.py b/visualization/views/supplier_summary_view.py
index c638a99..579a250 100644
--- a/visualization/views/supplier_summary_view.py
+++ b/visualization/views/supplier_summary_view.py
@@ -40,9 +40,7 @@ def get(self, request):
             .aggregate(total=Count("supplier"))
         )
         for details in supplier_details:
-            data = {}
-            data["supplier_count"] = details["count"]
-            data["month"] = details["month"]
+            data = {"supplier_count": details["count"], "month": details["month"]}
             trend.append(data)
         try:
             dates_in_details = [i["month"] for i in supplier_details]
diff --git a/visualization/views/top_buyers.py b/visualization/views/top_buyers.py
index ac6907d..fd7bca8 100644
--- a/visualization/views/top_buyers.py
+++ b/visualization/views/top_buyers.py
@@ -46,21 +46,23 @@ def get(self, request):
         by_number = []
         by_value = []
         for value in for_value:
-            a = {}
-            a["amount_local"] = value["local"] if value["usd"] else 0
-            a["amount_usd"] = value["usd"] if value["usd"] else 0
-            a["local_currency_code"] = value["country__currency"]
-            a["buyer_id"] = value["buyer__id"]
-            a["buyer_name"] = value["buyer__buyer_name"]
-            a["tender_count"] = value["count"]
+            a = {
+                "amount_local": value["local"] if value["usd"] else 0,
+                "amount_usd": value["usd"] if value["usd"] else 0,
+                "local_currency_code": value["country__currency"],
+                "buyer_id": value["buyer__id"],
+                "buyer_name": value["buyer__buyer_name"],
+                "tender_count": value["count"],
+            }
             by_value.append(a)
         for value in for_number:
-            a = {}
-            a["amount_local"] = value["local"] if value["usd"] else 0
-            a["amount_usd"] = value["usd"] if value["usd"] else 0
-            a["local_currency_code"] = value["country__currency"]
-            a["buyer_id"] = value["buyer__id"]
-            a["buyer_name"] = value["buyer__buyer_name"]
-            a["tender_count"] = value["count"]
+            a = {
+                "amount_local": value["local"] if value["usd"] else 0,
+                "amount_usd": value["usd"] if value["usd"] else 0,
+                "local_currency_code": value["country__currency"],
+                "buyer_id": value["buyer__id"],
+                "buyer_name": value["buyer__buyer_name"],
+                "tender_count": value["count"],
+            }
             by_number.append(a)
         return JsonResponse({"by_number": by_number, "by_value": by_value})
diff --git a/visualization/views/top_suppliers.py b/visualization/views/top_suppliers.py
index a5f0d22..9914d24 100644
--- a/visualization/views/top_suppliers.py
+++ b/visualization/views/top_suppliers.py
@@ -56,30 +56,33 @@ def get(self, request):
         )
 
         for value in for_value:
-            a = {}
-            a["amount_local"] = value["local"] if value["local"] else 0
-            a["amount_usd"] = value["usd"] if value["usd"] else 0
-            a["local_currency_code"] = value["country__currency"]
-            a["supplier_id"] = value["supplier__id"]
-            a["supplier_name"] = value["supplier__supplier_name"]
-            a["tender_count"] = value["count"]
+            a = {
+                "amount_local": value["local"] if value["local"] else 0,
+                "amount_usd": value["usd"] if value["usd"] else 0,
+                "local_currency_code": value["country__currency"],
+                "supplier_id": value["supplier__id"],
+                "supplier_name": value["supplier__supplier_name"],
+                "tender_count": value["count"],
+            }
             by_value.append(a)
         for value in for_number:
-            a = {}
-            a["amount_local"] = value["local"] if value["local"] else 0
-            a["amount_usd"] = value["usd"] if value["usd"] else 0
-            a["local_currency_code"] = value["country__currency"]
-            a["supplier_id"] = value["supplier__id"]
-            a["supplier_name"] = value["supplier__supplier_name"]
-            a["tender_count"] = value["count"]
+            a = {
+                "amount_local": value["local"] if value["local"] else 0,
+                "amount_usd": value["usd"] if value["usd"] else 0,
+                "local_currency_code": value["country__currency"],
+                "supplier_id": value["supplier__id"],
+                "supplier_name": value["supplier__supplier_name"],
+                "tender_count": value["count"],
+            }
             by_number.append(a)
 
         for value in for_buyer:
-            a = {}
-            a["supplier_id"] = value["supplier__id"]
-            a["local_currency_code"] = value["country__currency"]
-            a["supplier_name"] = value["supplier__supplier_name"]
-            a["buyer_count"] = value["count"]
+            a = {
+                "supplier_id": value["supplier__id"],
+                "local_currency_code": value["country__currency"],
+                "supplier_name": value["supplier__supplier_name"],
+                "buyer_count": value["count"],
+            }
             by_buyer.append(a)
 
         return JsonResponse({"by_number": by_number, "by_value": by_value, "by_buyer": by_buyer})
diff --git a/visualization/views/total_spendings_view.py b/visualization/views/total_spendings_view.py
index 4e3a4d0..d6cfd10 100644
--- a/visualization/views/total_spendings_view.py
+++ b/visualization/views/total_spendings_view.py
@@ -23,8 +23,7 @@ def get(self, request):
         supplier = self.request.GET.get("supplier")
 
         filter_args = {}
-        exclude_args = {}
-        exclude_args["status"] = "canceled"
+        exclude_args = {"status": "canceled"}
         if country:
             filter_args["country__country_code_alpha_2"] = country
         if buyer: