During Hydra OAuth 2.0 integration facing Error : "Client authentication failed"

We are using ORY Hydra for oAuth 2 and OpenId connection using Docker.

I am following this tutorial " https://www.ory.sh/run-oauth2-server-open-source-api-security/ " for configure OAuth 2.0 on the server. I get the 404 Error when I check the log than find out the Error which is

Any one have a solution then please provide us it’s a little bit urgent.

Thank you in advance