diff --git a/chatgpt/refreshToken.py b/chatgpt/refreshToken.py
index d117b5b..c7e048d 100644
--- a/chatgpt/refreshToken.py
+++ b/chatgpt/refreshToken.py
@@ -54,9 +54,10 @@ async def chat_refresh(refresh_token):
             access_token = r.json()['access_token']
             return access_token
         else:
-            raise Exception("Unknown or invalid refresh token.")
+            raise Exception(r.text[:100])
     except Exception as e:
-        raise HTTPException(status_code=500, detail=f"Failed to refresh access_token: {str(e)}")
+        logger.error(f"Failed to refresh access_token: {str(e)}")
+        raise HTTPException(status_code=500, detail=f"Failed to refresh access_token.")
     finally:
         await client.close()
         del client