Web page fetch request causing CORS Error when session expired on RHBK

Issue

• When session expired, RHBK can not redirect to login page, the error log in browser console indicate the fetch request was failured due to CORS issue:

Access to fetch at 'http://xxx.yyy.com:4580/auth/realms/zzzGroup/protocol/openid-connect/auth?response_type=code&client_id=it-ipms&redirect_uri=http%3A%2F%2Fdn2xxx.zzz.com%3A7601%2FIPMS%2Fmmm&state=9bd902b1-0c30-4d46-b523-38d12986cb76&login=true&scope=openid' (redirected from 'http://xxx.yyy.com:7601/nnn/mmm') from origin 'http://xxx.yyy.com:7601' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

• Although configured the CORS in the client adapter, this error still exists.