[MusicBERT]error in running preprocess.py

[xhm12345abcde]

Python version 3.12

Traceback (most recent call last):
File "", line 1, in
File "C:\Users\许\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\spawn.py", line 122, in spawn_main
exitcode = _main(fd, parent_sentinel)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\许\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\spawn.py", line 131, in _main
prepare(preparation_data)
File "C:\Users\许\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\spawn.py", line 246, in prepare
_fixup_main_from_path(data['init_main_from_path'])
File "C:\Users\许\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\spawn.py", line 297, in _fixup_main_from_path
main_content = runpy.run_path(main_path,
^^^^^^^^^^^^^^^^^^^^^^^^^
File "", line 286, in run_path
File "", line 98, in _run_module_code
File "", line 88, in _run_code
File "D:\工作区\信号与系统大作业\emotion\musicbert\preprocess.py", line 47, in
manager = Manager()
^^^^^^^^^
File "C:\Users\许\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\context.py", line 57, in Manager
m.start()
File "C:\Users\许\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\managers.py", line 562, in start
self._process.start()
File "C:\Users\许\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\process.py", line 121, in start
self._popen = self._Popen(self)
^^^^^^^^^^^^^^^^^
File "C:\Users\许\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\context.py", line 337, in _Popen
return Popen(process_obj)
^^^^^^^^^^^^^^^^^^
File "C:\Users\许\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\popen_spawn_win32.py", line 46, in init
prep_data = spawn.get_preparation_data(process_obj._name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\许\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\spawn.py", line 164, in get_preparation_data
_check_not_importing_main()
File "C:\Users\许\AppData\Local\Programs\Python\Python312\Lib\multiprocessing\spawn.py", line 140, in _check_not_importing_main
raise RuntimeError('''
RuntimeError:
An attempt has been made to start a new process before the
current process has finished its bootstrapping phase.

    This probably means that you are not using fork to start your
    child processes and you have forgotten to use the proper idiom
    in the main module:

        if __name__ == '__main__':
            freeze_support()
            ...

    The "freeze_support()" line can be omitted if the program
    is not going to be frozen to produce an executable.

    To fix this issue, refer to the "Safe importing of main module"
    section in https://docs.python.org/3/library/multiprocessing.html