[Fix #1456] When job crashed notify Sentry

app/jobs/application_job.rb

@@ -6,4 +6,8 @@ class ApplicationJob < ActiveJob::Base
   after_perform do |job|
     Rails.logger.info("#{job.class.name} ended at #{Time.now}")
   end
+
+  def error(job, exception)
+    Raven.capture_exception(exception)
+  end
 end