unknownError An operation failed due to an unknown error. Declarationstatic var unknownError: CHHapticError.Code { get } See AlsoError Code ConstantsbadEventEntrybadParameterEntryengineNotRunningengineStartTimeoutfileNotFoundinsufficientPowerinvalidAudioResourceinvalidAudioSessioninvalidEngineParameterinvalidEventDurationinvalidEventTimeinvalidEventTypeinvalidParameterTypeinvalidPatternDatainvalidPatternDictionary