fix

Author: saadmk11

src/config.py

@@ -38,14 +38,16 @@ class CustomEnvSettingsSource(EnvSettingsSource):
     def prepare_field_value(
         self, field_name: str, field: FieldInfo, value: Any, value_is_complex: bool
     ) -> Any:
-        if value and field_name in [
+        if field_name in [
             "ignore_actions",
             "pull_request_user_reviewers",
             "pull_request_team_reviewers",
             "pull_request_labels",
             "release_types",
             "extra_workflow_locations",
         ]:
+            if not value:
+                return None
             if value.startswith("[") and value.endswith("]"):
                 return frozenset(json.loads(value))
             return frozenset(s.strip() for s in value.strip().split(",") if s)