get instead of filter

portal/views/secure/dataset.py

@@ -309,7 +309,7 @@ class DataSetFileListJSONView(StaffViewMixin, JSONListView):
     model = DataSet
 
     def get_queryset(self):
-        profile = Profile.objects.filter(accountname=self.kwargs.get('sim'))
+        profile = Profile.objects.get(accountname=self.kwargs.get('sim'))
         return super().get_queryset().filter(
             Q(created_by=profile)
             | Q(share_profiles=profile)