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. ForkingPickler(file, protocol).dump(obj) BrokenPipeError: [Errno 32] Broken pipe

It seems like you are encountering an error related to multiprocessing in Python. The error message suggests that you are trying to start a new process before the current process has finished its bootstrapping phase, which can happen if you are not using the `fork` method to start child processes and have forgotten to use the proper idiom in the main module.

To fix this issue, you can add the following code to the beginning of your main module:

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

This code ensures that the `freeze_support()` function is only called when the program is run as the main module, and it helps to prepare the multiprocessing module for use on Windows platforms.

If you are not planning to freeze your program to produce an executable, you can omit the `freeze_support()` line.

As for the `BrokenPipeError`, it usually occurs when a pipe is closed or broken unexpectedly. You may need to provide more context or information about your code to determine the cause of this error.