import parl时RuntimeError

[sususweet]

windows 环境下的python 3.9，安装pp 2.5.1版本，import parl时报错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.

[18699502246]

你解决了吗

[sususweet]

你解决了吗

应该是官方库或者文档的缺陷，我换pytorch了