diff --git a/src/server/app.py b/src/server/app.py
index 8fb908d..b7faf80 100644
--- a/src/server/app.py
+++ b/src/server/app.py
@@ -270,7 +270,7 @@ async def _stream_graph_events(
             "error",
             {
                 "thread_id": thread_id,
-                "error": str(e),
+                "error": "Error during graph execution",
             },
         )