Fix region setting for AWS gem

app/services/process_feed_service.rb

@@ -175,7 +175,8 @@ class ProcessFeedService < BaseService
 
     def url(xml = @xml)
       link = xml.at_xpath('./xmlns:link[@rel="alternate"]')
-      link['href']
+      link['href'] unless link.nil?
+      nil
     end
 
     def content(xml = @xml)

config/initializers/paperclip.rb

@@ -2,6 +2,7 @@ if ENV['S3_ENABLED'] == 'true'
   Paperclip::Attachment.default_options[:storage]      = :s3
   Paperclip::Attachment.default_options[:s3_protocol]  = 'https'
   Paperclip::Attachment.default_options[:url]          = ':s3_domain_url'
+  Paperclip::Attachment.default_options[:s3_host_name] = "s3-#{ENV.fetch('S3_REGION')}.amazonaws.com"
   Paperclip::Attachment.default_options[:path]         = '/:class/:attachment/:id_partition/:style/:filename'
 
   Paperclip::Attachment.default_options[:s3_credentials] = {