GKError.Code.invalidPlayer The system can’t complete the requested operation because the player is invalid. Declarationcase invalidPlayer See AlsoCommunication ErrorsGKError.Code.unknownGKError.Code.cancelledGKError.Code.communicationsFailureGKError.Code.invalidParameterGKError.Code.gameSessionRequestInvalidGKError.Code.apiNotAvailableGKError.Code.connectionTimeoutGKError.Code.apiObsolete