diff --git a/wwwroot/api/rl_callback.dspy b/wwwroot/api/rl_callback.dspy
index ba4a54d..15beb27 100644
--- a/wwwroot/api/rl_callback.dspy
+++ b/wwwroot/api/rl_callback.dspy
@@ -31,6 +31,7 @@ try:
 except Exception as e:
     debug(f"[rl_callback] exception: {e}")
     print(f"[rl_callback] exception: {e}")
+    print(format_exc())
     return json.dumps({"code": "500", "message": f"Internal error: {str(e)}"})
 
 if result.get("success"):