AttributeError: Caught AttributeError in DataLoader worker process 0. AttributeError: 'NoneType' object has no attribute 'astype' subprocess.CalledProcessError: Command '['/home/liu/anaconda3/envs/pytorch-CycleGAN-and-pix2pix/bin/python', '-u', 'gfpgan/train.py', '-opt', 'options/train_gfpgan_v1.yml', '--launcher', 'pytorch']' returned non-zero exit status 1.

[fengfenglong123]

[fengfenglong123]

May I ask how to resolve this error when encountering it？I suspect it's a problem with the dataset. I created my own LMDB dataset, but I don't know how to solve it. I hope it can help me. Thank you