fix the download .zip view

django/allgo/main/views.py

@@ -1311,7 +1311,7 @@ class JobFileDownload(JobAuthMixin, View):
         return redirect("/datastore/%s/%s" % (job_id, filename))
 
 
-class JobFileDownloadAll(JobAuthMixin, View):
+class JobFileDownloadAll(JobAuthMixin, SingleObjectMixin, View):
     """Archive and download all files of a given job
     """
     model = Job