Question: Found this in the logs:
2021-12-20 15:46:27.168 WARN 7 --- [nio-8084-exec-5] c.n.s.gate.filters.FiatSessionFilter : Authenticated user was not present in authenticated request. Check authentication settings.
Answer: Very likely authZ is not enabled in Spinnaker. Search for "authz" in .hal/config and set it to true.
We should also ensure that "fiat" service is enabled true in oes-gate-config secret(gate.yml).
If the problem persists even after enabling fiat, it is possible that fiat-service is unable to get the groups a user belongs to. Please check the authn/authZ configuration for getting the groups.