AssertionError: Failed to read image

[Ebeie]

when I run python upsnet/upsnet_end2end_train.py --cfg upsnet/experiments/upsnet_resnet50_coco_4gpu.yaml，this question happened

``Traceback (most recent call last):
File "upsnet/upsnet_end2end_train.py", line 403, in
upsnet_train()
File "upsnet/upsnet_end2end_train.py", line 257, in upsnet_train
data, label, _ = train_iterator.next()
File "/home/ustb/anaconda3/envs/upsnet/lib/python3.6/site-packages/torch/utils/data/dataloader.py", line 336, in next
return self._process_next_batch(batch)
File "/home/ustb/anaconda3/envs/upsnet/lib/python3.6/site-packages/torch/utils/data/dataloader.py", line 357, in _process_next_batch
raise batch.exc_type(batch.exc_msg)
AssertionError: Traceback (most recent call last):
File "/home/ustb/anaconda3/envs/upsnet/lib/python3.6/site-packages/torch/utils/data/dataloader.py", line 106, in _worker_loop
samples = collate_fn([dataset[i] for i in batch_indices])
File "/home/ustb/anaconda3/envs/upsnet/lib/python3.6/site-packages/torch/utils/data/dataloader.py", line 106, in
samples = collate_fn([dataset[i] for i in batch_indices])
File "upsnet/../upsnet/dataset/coco.py", line 126, in getitem
im_blob, im_scales = self.get_image_blob([self.roidb[index]])
File "upsnet/../upsnet/dataset/base_dataset.py", line 127, in get_image_blob
'Failed to read image '{}''.format(roidb[i]['image'])
AssertionError: Failed to read image './data/coco/images/train2017/000000546010.jpg'