code: def __init__(self, workflow_id: str):
      self.message = f"Workflow[id={workflow_id}] was referenced but doesn't exist."
      super().__init__(self.message)
  
imports: from ray.util.annotations import PublicAPI
  from ray.workflow.common import TaskID
label_desc: Use image node_id 1 to create a new WorkflowNotFoundError object from inherited base classes: WorkflowError with example: obj = WorkflowNotFoundError(workflow_id)