login.OAuthLogin(NewTransportWithCode) Bad Credentials

[Murugan2all]

I am facing the similar issue while upgrading from 21.1 to 23.3 prometheus. When i review the grafana logs below error reported.

t=2018-12-19T15:17:34+0000 lvl=eror msg=login.OAuthLogin(NewTransportWithCode) logger=context userId=0 orgId=0 uname= error="oauth2: cannot fetch token: 401 Unauthorized\nResponse: {"error":"unauthorized","error_description":"Bad credentials"}"

validated both grafana.ini and params file looks fine.