Workspace creation has failed from factory on authentication step:

7:22:11,990 ERROR [org.keycloak.broker.oidc.AbstractOAuth2IdentityProvider] (default task-6) Failed to make identity provider oauth callback: org.keycloak.broker.provider.IdentityBrokerException: No access_token from server. error='invalid_client', error_description='Client authentication failed due to unknown client, no client authentication included, or unsupported authentication method.', error_uri='null

Test factory URL: https://codeready-crw-crwctl-gitlab.apps.ocp410.crw-qe.com/dashboard/#/https://gitlab.cee.redhat.com/oshmarai/private-gitlab-repo.git

Steps to reproduce: https://issues.redhat.com/browse/CRW-2739

It could be related to update of rh-sso version in CRW 2.15.3:

• CRW 2.15.2: registry.redhat.io/rh-sso-7/sso75-openshift-rhel8:7.5-19 
• CRW 2.15.3: registry.redhat.io/rh-sso-7/sso75-openshift-rhel8:7.5-24

Please, find attached logs:

• keycloak-7c547b6f64-8qt4h-keycloak.log
• codeready-595df89796-fq6kl-codeready.log

 
Factory with GitLab on-prem public repo has loaded successfully:
https://codeready-crw-crwctl-gitlab.apps.ocp410.crw-qe.com/f?url=https://gitlab.cee.redhat.com/oshmarai/public-gitlab-repo.git

An update:
There was empty secret ID of gitlab identity provider in keycloak.
Workspace has started successfully after fix of identity provider settings.