HttpBearerAuth and client_credentials

I use Filsh/yii2-oauth2-server together with user_credentials.

Now I want to use also client_credentials. Getting the access_token works fine, but if I try to login with HttpBearerAuth the Yii2 Framework looks for a user. But with client_credentials you do not have a user.

I can give the client_credentials login a specific user account but this feels wrong.