Registry log is full of the following errors:
2022-04-27 20:21:25,697Z (16:21) [Event Sink Thread Pool Thread 2] ERROR com.ca.ad.sv.iam.IAMClient - Error while logging outorg.keycloak.authorization.client.util.HttpResponseException: Unexpected response from server: 400 / Bad Request / Response from server: {"error":"invalid_request","error_description":"No refresh token"}
Release : 10.7
Component : DevTest Registry
Failed IAM Upgrade that led to missing of an important attribute in one of the IAM tables that led to NULL refresh tokens which caused this problem.
Open a support case and refer to defect DE534591.