diff --git a/main.py b/main.py
index 45e0735..cedc6b6 100644
--- a/main.py
+++ b/main.py
@@ -121,6 +121,7 @@ async def process_data(request: Request):
         payload = json.loads(payload)
         send_len = payload["l"]
         if receive_len != send_len:
+            print("校验错误")
             return 301
         m = payload["m"]
         v = payload["v"]