Failed to validate engine camunda-bpm version

I deployed Camunda 8 on Openshift, but Optimize 3.10.2 pod has errors. I don’t use Identity.

ERROR o.c.o.rest.engine.EngineContext - Failed to validate engine camunda-bpm version with error message: Engine didn't respond. Can not verify this engine's version
org.camunda.optimize.service.exceptions.OptimizeRuntimeException: Engine didn't respond. Can not verify this engine's version
ERROR o.c.o.rest.engine.EngineContext - Could not fetch application authorizations from the Engine with alias [camunda-bpm] to check the access permissions.
org.camunda.optimize.service.exceptions.OptimizeRuntimeException: Engine didn't respond. Can not verify this engine's version
ERROR o.c.o.s.i.PlatformUserIdentityCache - Could not sync platform user identities. Will stop retrying as next scheduled sync is approaching
org.camunda.optimize.service.exceptions.OptimizeRuntimeException: Could not fetch application authorizations from the Engine with alias [camunda-bpm] to check the access permissions.

How to solve these errors?