fix gettext problem

Issue: AAH-2761

galaxy_ng/app/api/ui/viewsets/tags.py

@@ -116,7 +116,7 @@ def _filter_queryset(self, queryset, request):
             sort_field = sort.replace("-", "")
             queryset = sorted(queryset, key=lambda x: x[sort_field], reverse=reverse)
         elif sort is not None:
-            raise serializers.ValidationError(_(f"Invalid Sort: '{sort}'"))
+            raise serializers.ValidationError(_("Invalid Sort: '{}'").format(sort))
 
         return queryset