Policy removed with confusing msg

Hi I am testing the policy apis locally. I added a partition policy and tried to remove it. The policy is removed successfully but the response msg says Error:

{ "policy_id": "storage.rego", "data_partition": "osdu", "status": true, "message": "Error while removing policy osdu/partition/osdu/storage.rego", "result": {} }

Please fix.

Thanks, Dadong