twisted.internet.task.SchedulerError(Exception) class documentationtwisted.internet.task
          
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      Known subclasses: twisted.internet.task.NotPaused, twisted.internet.task.SchedulerStopped, twisted.internet.task.TaskFinished
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.