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# ``twisted`.`internet`.`task`.`SchedulerError``

exception documentation

`class SchedulerError(Exception): (source)`

Known subclasses: `twisted.internet.task.NotPaused`, `twisted.internet.task.SchedulerStopped`, `twisted.internet.task.TaskFinished`

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The operation could not be completed because the scheduler or one of its tasks was in an invalid state. This exception should not be raised directly, but is a superclass of various scheduler-state-related exceptions.