Sporadic Callkit extension get enabled status method issue

Hello, I have sporadically in the field the following issue as a response of the method:    CXCallDirectoryManager.sharedInstance.getEnabledStatusForExtension(withIdentifier: ------)

Sporadic error: The connection to service named com.apple.CallKit.CallDirectory was invalidated from this process. nserror-code 4099 nserror-domain NSCocoaErrorDomain

Has anyone more info about this call kit error? RGDS & Thanks a lot.