win10直接运行train.py 报错。微信nlanguage ForkingPickler(file, protocol).dump(obj) TypeError: cannot pickle 'Font' object

[yizt]

win10直接运行train.py 报错。微信nlanguage ForkingPickler(file, protocol).dump(obj) TypeError: cannot pickle 'Font' object

[nissansz]

这个错误，可以解决 # num_workers=args.workers
改为num_workers = 0

但是然后转到generator.py，又在这个类报错了
C:\Users\Ni\AppData\Local\Programs\Python\Python38\python.exe F:/pycharm2020.2/crnn.pytorch_generator/train.py
Namespace(batch_size=64, device='cuda', direction='horizontal', dist_backend='nccl', dist_url='env://', distributed=False, epochs=90, init_epoch=0, local_rank=0, lr=0.01, lr_gamma=0.1, lr_step_size=30, momentum=0.9, output_dir='./output', sync_bn=False, weight_decay=1e-05, workers=4, world_size=1)
0%| | 0/18 [00:00<?, ?it/s]
Traceback (most recent call last):
File "F:/pycharm2020.2/crnn.pytorch_generator/train.py", line 195, in
train(arguments)
File "F:/pycharm2020.2/crnn.pytorch_generator/train.py", line 140, in train
loss = train_one_epoch(model, criterion, optimizer, data_loader, device, epoch, args)
File "F:/pycharm2020.2/crnn.pytorch_generator/train.py", line 65, in train_one_epoch
for image, target, input_len, target_len in tqdm(data_loader):
File "C:\Users\Ni\AppData\Local\Programs\Python\Python38\lib\site-packages\tqdm\std.py", line 1165, in iter
for obj in iterable:
File "C:\Users\Ni\AppData\Local\Programs\Python\Python38\lib\site-packages\torch\utils\data\dataloader.py", line 521, in next
data = self._next_data()
File "C:\Users\Ni\AppData\Local\Programs\Python\Python38\lib\site-packages\torch\utils\data\dataloader.py", line 561, in _next_data
data = self._dataset_fetcher.fetch(index) # may raise StopIteration
File "C:\Users\Ni\AppData\Local\Programs\Python\Python38\lib\site-packages\torch\utils\data_utils\fetch.py", line 49, in fetch
data = [self.dataset[idx] for idx in possibly_batched_index]
File "C:\Users\Ni\AppData\Local\Programs\Python\Python38\lib\site-packages\torch\utils\data_utils\fetch.py", line 49, in
data = [self.dataset[idx] for idx in possibly_batched_index]
File "F:\pycharm2020.2\crnn.pytorch_generator\generator.py", line 181, in getitem
image, indices, target_len = self.gen_image()
File "F:\pycharm2020.2\crnn.pytorch_generator\generator.py", line 158, in gen_image
text = np.random.choice(FONT_CHARS_DICT[font_path], target_len)
File "mtrand.pyx", line 908, in numpy.random.mtrand.RandomState.choice
ValueError: 'a' cannot be empty unless no samples are taken

Process finished with exit code 1