During Hydra OAuth 2.0 integration facing Error : “Client authentication failed”

Question

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

I am following this tutorial to configuring OAuth 2.0 on the server. I get the 404 Error when I check the log than find out the error which is

I have applied the Docker code which displayed in the tutorial, then also I get a 404 Error from 0.0.0.0:9000 port.