python multiprocessing多进程 cannot pickle '_io.TextIOWrapper' object

Python 3.9.6 在windows下使用multiprocessing多进程报如下错误，但linux下正常

Traceback (most recent call last):
  File "D:\Studio\python\New\autoTest\cases\Zd\commDaping.py", line 324, in testDapingLianHuaShiYeOK
    self.dapingLianHuaShiYeOK(driver, paramsIn, checkPoint)
  File "D:\Studio\python\New\autoTest\cases\Zd\dapingLianHuaShiYe.py", line 40, in dapingLianHuaShiYeOK
    t1.start()
  File "D:\ProgramFiles\Python\Python39\lib\multiprocessing\process.py", line 121, in start
    self._popen = self._Popen(self)
  File "D:\ProgramFiles\Python\Python39\lib\multiprocessing\context.py", line 224, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "D:\ProgramFiles\Python\Python39\lib\multiprocessing\context.py", line 327, in _Popen
    return Popen(process_obj)
  File "D:\ProgramFiles\Python\Python39\lib\multiprocessing\popen_spawn_win32.py", line 93, in __init__
    reduction.dump(process_obj, to_child)
  File "D:\ProgramFiles\Python\Python39\lib\multiprocessing\reduction.py", line 60, in dump
    ForkingPickler(file, protocol).dump(obj)
TypeError: cannot pickle '_io.TextIOWrapper' object