diff --git a/chart/f7t4jhub/files/jupyterhub-config.py b/chart/f7t4jhub/files/jupyterhub-config.py
index 82d0cf9..443751e 100644
--- a/chart/f7t4jhub/files/jupyterhub-config.py
+++ b/chart/f7t4jhub/files/jupyterhub-config.py
@@ -80,7 +80,10 @@ async def refresh_user(self, user, handler=None):
         }
 
         response = requests.post(self.token_url, data=params, headers=headers)
-        self.log.debug(f"[refresh_user] Request to KeyCloak: {response} {response.json()}")
+        if response.status_code != 200:
+            self.log.debug(f"[refresh_user] Request to KeyCloak: {response.json()}")
+            return False
+
         token_response = response.json()
 
         auth_state['token_response'].update(token_response)