Configuration keycloak

I need step for configuration keycloak into ownload.

Please take a look at OpenID Connect (OIDC) :: ownCloud Documentation

I have this error

Error in OpenIdConnect:The provider authorization_endpoint could not be fetched. Make sure your provider has a well known configuration available.

Following the recommendations from keycloak, you should have your own realm there (check some official keycloak guide).

Assuming your realm is ownCloudCloak, the target “provider-url” you need to setup in ownCloud’s config.php file is http://my.keycloak.server/realms/ownCloudCloak (adjust protocol and server as needed)

Work but have this message

Error in OpenIdConnect:PKCE code verifier not specified