TIB Custom provider configuration - help

I have this in TIB log :

INFO[0000] Tyk Identity Broker v0.1
INFO[0000] Copyright Martin Buhr 2016

INFO[0000] [MAIN] Initialising Profile Configuration Store
INFO[0000] [IN-MEMORY STORE] Initialised
INFO[0000] [MAIN] Initialising Identity Cache
INFO[0000] [REDIS STORE] Initialised
INFO[0000] [FILE LOADER] Loaded: 2 profiles from profiles.json
INFO[0000] [MAIN] Broker Listening on :3010
WARN[0005] [TYK ID HANDLER] No expiry found - defaulting to 3600 seconds
INFO[0005] [TYK ID HANDLER] Starting Token Flow…
WARN[0005] Response code was: 404
WARN[0005] GOT:404 page not found

ERRO[0005] [TYK ID HANDLER] --> Login failure. Request not allowed

I do not understand the “404” because I see the request coming from TIB in my provider, and my provider reply a 200.