Add http error handler

Signed-off-by: nativaldezt <nativaldezt@gmail.com>

kingfisher_scrapy/spiders/moldova_positive_initiative.py

@@ -1,6 +1,6 @@
 import scrapy
 from kingfisher_scrapy.base_spider import SimpleSpider
-from kingfisher_scrapy.util import components, get_parameter_value
+from kingfisher_scrapy.util import components, get_parameter_value, handle_http_error
 
 
 class MoldovaPositiveInitiative(SimpleSpider):
@@ -15,8 +15,10 @@ def start_requests(self):
         url = 'https://www.tender.health/ocdsrelease'
         yield scrapy.Request(url, meta={'file_name': 'page.html'}, callback=self.scrape_page)
 
+    @handle_http_error
     def scrape_page(self, response, **kwargs):
-        for href in response.xpath('//a/@href').getall():
+        hrefs = response.xpath('//a/@href').getall()
+        for href in hrefs:
             if '.json' in href:
                 url = get_parameter_value(href, 'q')
                 yield self.build_request(url, formatter=components(-1))