register pier to bitxhub error

[tianyinoo]

when I follow the guidance of quickly start doc to register pier to bitxhub, there is a error:
invoke bvm contract: rpc error code=unknownn desc = not found in DB

I see the code achieving register cmd function, but I can't find where the error is

[Alexader]

Are you working the same release of pier and bitxhub? This error occurs because the tx for registeration haven't been processed by bitxhub. Maybe you should check the version of bitxhub and pier first.

[tianyinoo]

Thanks for your answer. I try to restart the bitxhub, then it's ok.