KeyError: '__getstate__'

[xjsdn]

2022-11-05 01:31:01,498 - INFO - Exiting due to exception: 'getstate'
Traceback (most recent call last):
File "E:\ai_ai\melgan-master\utils\train.py", line 60, in train
validate(hp, args, model_g, model_d, valloader, writer, step)
File "E:\ai_ai\melgan-master\utils\validation.py", line 15, in validate
for mel, audio in loader:
File "E:\ai_ai\melgan-master\venv\lib\site-packages\tqdm\std.py", line 1195, in iter
for obj in iterable:
File "E:\ai_ai\melgan-master\venv\lib\site-packages\torch\utils\data\dataloader.py", line 355, in iter
return self._get_iterator()
File "E:\ai_ai\melgan-master\venv\lib\site-packages\torch\utils\data\dataloader.py", line 301, in _get_iterator
return _MultiProcessingDataLoaderIter(self)
File "E:\ai_ai\melgan-master\venv\lib\site-packages\torch\utils\data\dataloader.py", line 914, in init
w.start()
File "E:\ai_ai\trans\python3.6.7\lib\multiprocessing\process.py", line 105, in start
self._popen = self._Popen(self)
File "E:\ai_ai\trans\python3.6.7\lib\multiprocessing\context.py", line 223, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
File "E:\ai_ai\trans\python3.6.7\lib\multiprocessing\context.py", line 322, in _Popen
return Popen(process_obj)
File "E:\ai_ai\trans\python3.6.7\lib\multiprocessing\popen_spawn_win32.py", line 65, in init
reduction.dump(process_obj, to_child)
File "E:\ai_ai\trans\python3.6.7\lib\multiprocessing\reduction.py", line 60, in dump
ForkingPickler(file, protocol).dump(obj)
KeyError: 'getstate'