code: def __init__(self, msg):
      self.msg = msg
  
imports: import itertools
  import json
  import logging
  import multiprocessing
  import sys
  import traceback
  from pathlib import Path
  from pydoc import locate
  from tempfile import TemporaryDirectory
  from typing import TYPE_CHECKING, Callable, Iterator, Optional, Dict, Any
  import numpy
  import gluonts
  from gluonts.core import fqname_for
  from gluonts.core.component import equals, from_hyperparameters
  from gluonts.core.serde import dump_json, load_json
  from gluonts.dataset.common import DataEntry, Dataset
  from gluonts.model.forecast import Forecast
label_desc: Use image node_id 1 to create a new WorkerError object  with example: obj = WorkerError(msg)