Missing import

weblate/trans/validators.py

@@ -65,6 +65,7 @@ def validate_repo(val):
     '''
     Validates Git URL, and special weblate:// links.
     '''
+    from weblate.trans.models import SubProject
     try:
         repo = get_linked_repo(val)
         if repo is not None and repo.is_repo_link():