diff --git a/www-api/app/Controllers/WrenchApi.php b/www-api/app/Controllers/WrenchApi.php
index a73f15b4..759140a2 100644
--- a/www-api/app/Controllers/WrenchApi.php
+++ b/www-api/app/Controllers/WrenchApi.php
@@ -533,6 +533,7 @@ class WrenchApi extends BaseController
                 $call_backend = false;
                 $local_out["status_msg"] = "invalid_session_msg";
                 $local_out['internal_return'] = PHP_INVALID_SESSION;
+                return json_encode( $local_out  );
             }
         }