MetricManager.LaunchTaskError.Reason.taskUnknown The task hasn’t been started or has already been finished. Declarationcase taskUnknown See AlsoError reasonsMetricManager.LaunchTaskError.Reason.invalidIDMetricManager.LaunchTaskError.Reason.maxCountExceededMetricManager.LaunchTaskError.Reason.pastDeadlineMetricManager.LaunchTaskError.Reason.duplicateTaskMetricManager.LaunchTaskError.Reason.internalFailure