Help training

[Ronald-Kray]

Describe the bug
I can't proceed train step. What should I do?

To Reproduce
Steps to reproduce the behavior:
Traceback (most recent call last):
File "C:/Users/ha485/PycharmProjects/toandaominh1997_EfficientDet.Pytorch/train.py", line 334, in
main()
File "C:/Users/ha485/PycharmProjects/toandaominh1997_EfficientDet.Pytorch/train.py", line 330, in main
main_worker(args.gpu, ngpus_per_node, args)
File "C:/Users/ha485/PycharmProjects/toandaominh1997_EfficientDet.Pytorch/train.py", line 275, in main_worker
train(train_loader, model, scheduler, optimizer, epoch, args)
File "C:/Users/ha485/PycharmProjects/toandaominh1997_EfficientDet.Pytorch/train.py", line 105, in train
for idx, (images, annotations) in enumerate(train_loader):
File "C:\Users\ha485.conda\envs'EfficientDet_toandao'\lib\site-packages\torch\utils\data\dataloader.py", line 819, in next
return self._process_data(data)
File "C:\Users\ha485.conda\envs'EfficientDet_toandao'\lib\site-packages\torch\utils\data\dataloader.py", line 846, in _process_data
data.reraise()
File "C:\Users\ha485.conda\envs'EfficientDet_toandao'\lib\site-packages\torch_utils.py", line 369, in reraise
raise self.exc_type(msg)
AttributeError: Caught AttributeError in DataLoader worker process 0.
Original Traceback (most recent call last):
File "C:\Users\ha485.conda\envs'EfficientDet_toandao'\lib\site-packages\torch\utils\data_utils\worker.py", line 178, in _worker_loop
data = fetcher.fetch(index)
File "C:\Users\ha485.conda\envs'EfficientDet_toandao'\lib\site-packages\torch\utils\data_utils\fetch.py", line 44, in fetch
data = [self.dataset[idx] for idx in possibly_batched_index]
File "C:\Users\ha485.conda\envs'EfficientDet_toandao'\lib\site-packages\torch\utils\data_utils\fetch.py", line 44, in
data = [self.dataset[idx] for idx in possibly_batched_index]
File "C:\Users\ha485\PycharmProjects\toandaominh1997_EfficientDet.Pytorch\datasets\coco.py", line 66, in getitem
img = self.load_image(idx)
File "C:\Users\ha485\PycharmProjects\toandaominh1997_EfficientDet.Pytorch\datasets\coco.py", line 79, in load_image
if len(img.shape) == 2:
AttributeError: 'NoneType' object has no attribute 'shape'

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Desktop (please complete the following information):

• OS: [e.g. Windows, Ubuntu 18.04]
• This repository version [e.g. pypi 0.3.1 or branch/commit ref]
• PyTorch version w/ CUDA/cuDNN [e.g. from conda list, 1.7.0 py3.8_cuda11.0.221_cudnn8.0.3_0]

Additional context
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