🐛 Add missing import

creator/analyses/analyzer.py

@@ -5,6 +5,7 @@
 from functools import partial
 from django.conf import settings
 from django_s3_storage.storage import S3Storage
+from graphql import GraphQLError
 from creator.analyses.models import Analysis
 from creator.files.models import Version
 

tests/analyses/test_extract_data.py

@@ -0,0 +1,16 @@
+import pytest
+from graphql import GraphQLError
+from creator.studies.factories import StudyFactory
+from creator.files.factories import FileFactory
+from creator.files.models import Version
+from creator.analyses.analyzer import extract_data
+
+
+def test_extract_data_no_study(db, settings):
+    settings.DEFAULT_FILE_STORAGE = "django_s3_storage.storage.S3Storage"
+
+    version = Version()
+    version.key.name = "test.csv"
+
+    with pytest.raises(GraphQLError) as err:
+        extract_data(version)