Edits.

Author: WaVEV

django_mongodb/compiler.py

@@ -465,7 +465,6 @@ def get_combinator_queries(self):
                     _, exprs = zip(*columns, strict=True)
                     columns = tuple(zip(main_query_fields, exprs, strict=True))
                 parts.append((compiler_.build_query(columns), compiler_.collection_name))
-
             except EmptyResultSet:
                 # Omit the empty queryset with UNION.
                 if self.query.combinator == "union":