issue in decease detection while running in cpu with pycharm

[Radhika-alahari]

When I call the following function
history = [evaluate(model, valid_dl)] the following error is coming, please guide to fix the problem
Traceback (most recent call last):
File "", line 1, in
File "C:\Users\anilk\anaconda3\Lib\multiprocessing\spawn.py", line 122, in spawn_main
exitcode = _main(fd, parent_sentinel)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\anilk\anaconda3\Lib\multiprocessing\spawn.py", line 131, in _main
prepare(preparation_data)
File "C:\Users\anilk\anaconda3\Lib\multiprocessing\spawn.py", line 246, in prepare
_fixup_main_from_path(data['init_main_from_path'])
File "C:\Users\anilk\anaconda3\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 "C:\ARA\agriculture\test12\sample.py", line 337, in
history = [evaluate(model, valid_dl)]
^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\anilk\anaconda3\Lib\site-packages\torch\utils_contextlib.py", line 116, in decorate_context
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "C:\ARA\agriculture\test12\sample.py", line 287, in evaluate
outputs = [model.validation_step(batch) for batch in val_loader]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\ARA\agriculture\test12\sample.py", line 163, in iter
for b in self.dl:
File "C:\Users\anilk\anaconda3\Lib\site-packages\torch\utils\data\dataloader.py", line 440, in iter
return self._get_iterator()
^^^^^^^^^^^^^^^^^^^^
File "C:\Users\anilk\anaconda3\Lib\site-packages\torch\utils\data\dataloader.py", line 388, in _get_iterator
return _MultiProcessingDataLoaderIter(self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\anilk\anaconda3\Lib\site-packages\torch\utils\data\dataloader.py", line 1038, in init
w.start()
File "C:\Users\anilk\anaconda3\Lib\multiprocessing\process.py", line 121, in start
self._popen = self._Popen(self)
^^^^^^^^^^^^^^^^^
File "C:\Users\anilk\anaconda3\Lib\multiprocessing\context.py", line 224, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\anilk\anaconda3\Lib\multiprocessing\context.py", line 337, in _Popen
return Popen(process_obj)
^^^^^^^^^^^^^^^^^^
File "C:\Users\anilk\anaconda3\Lib\multiprocessing\popen_spawn_win32.py", line 46, in init
prep_data = spawn.get_preparation_data(process_obj._name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\anilk\anaconda3\Lib\multiprocessing\spawn.py", line 164, in get_preparation_data
_check_not_importing_main()
File "C:\Users\anilk\anaconda3\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