Use CKpool + Umbrel Bitcoin full node

Hello,
i want to try mining using ckpool and set up my bitcoin full node with umbrel.
but when i’m lauching the “test” CKpool show up some error :

Select timed out in read_socket_line with errno 11: Resource temporarily unavailable
HTTP response to ( "getblock…) 0.251s not ok: HTTP/1.1 401 Unauthorized
localhost:8332 Failed to get valid json response to getblocktemplate
Select timed out in read_socket_line with errno 11: Resource temporarily unavailable
HTTP response to ( "getblock…) 0.251s not ok: HTTP/1.1 401 Unauthorized
localhost:8332 Failed to get valid json response to getblocktemplate
CRITICAL: No bitcoinds active!

does any one tried that before since i dont want to use public-pool