diff --git a/llm_server/routes/request_handler.py b/llm_server/routes/request_handler.py
index b712d03..d0990ea 100644
--- a/llm_server/routes/request_handler.py
+++ b/llm_server/routes/request_handler.py
@@ -39,7 +39,7 @@ class RequestHandler:
         self.selected_model = self.cluster_backend_info['model']
 
         if not self.cluster_backend_info.get('mode'):
-            print(selected_model, self.backend_url, self.cluster_backend_info)
+            print('keyerror: mode -', selected_model, self.backend_url, self.cluster_backend_info)
 
         self.backend = get_backend_handler(self.cluster_backend_info['mode'], self.backend_url)
         self.parameters = None