Hello Dear Author! The following problem occurs while reproducing your work:
Traceback (most recent call last):
File "/home/code/StableSR-main/main.py", line 738, in
trainer.fit(model, data)
File "/home/anaconda3/envs/stable/lib/python3.10/site-packages/pytorch_lightning/trainer/trainer.py", line 553, in fit
self._run(model)
File "/home/anaconda3/envs/stable/lib/python3.10/site-packages/pytorch_lightning/trainer/trainer.py", line 918, in _run
self._dispatch()
File "/home/anaconda3/envs/stable/lib/python3.10/site-packages/pytorch_lightning/trainer/trainer.py", line 986, in _dispatch
self.accelerator.start_training(self)
File "/home/anaconda3/envs/stable/lib/python3.10/site-packages/pytorch_lightning/accelerators/accelerator.py", line 92, in start_training
self.training_type_plugin.start_training(trainer)
File "/home/anaconda3/envs/stable/lib/python3.10/site-packages/pytorch_lightning/plugins/training_type/training_type_plugin.py", line 161, in start_training
self._results = trainer.run_stage()
File "/home/anaconda3/envs/stable/lib/python3.10/site-packages/pytorch_lightning/trainer/trainer.py", line 996, in run_stage
return self._run_train()
File "/home/anaconda3/envs/stable/lib/python3.10/site-packages/pytorch_lightning/trainer/trainer.py", line 1031, in _run_train
self._run_sanity_check(self.lightning_module)
File "/home/anaconda3/envs/stable/lib/python3.10/site-packages/pytorch_lightning/trainer/trainer.py", line 1111, in _run_sanity_check
self._evaluation_loop.reload_evaluation_dataloaders()
File "/home/anaconda3/envs/stable/lib/python3.10/site-packages/pytorch_lightning/loops/dataloader/evaluation_loop.py", line 173, in reload_evaluation_dataloaders
self.trainer.reset_val_dataloader(model)
File "/home/anaconda3/envs/stable/lib/python3.10/site-packages/pytorch_lightning/trainer/data_loading.py", line 437, in reset_val_dataloader
self.num_val_batches, self.val_dataloaders = self._reset_eval_dataloader(model, "val")
File "/home/anaconda3/envs/stable/lib/python3.10/site-packages/pytorch_lightning/trainer/data_loading.py", line 398, in _reset_eval_dataloader
num_batches = len(dataloader) if has_len(dataloader) else float("inf")
File "/home/anaconda3/envs/stable/lib/python3.10/site-packages/pytorch_lightning/utilities/data.py", line 63, in has_len
raise ValueError("Dataloader returned 0 length. Please make sure that it returns at least 1 batch")
ValueError: Dataloader returned 0 length. Please make sure that it returns at least 1 batch
After a longer period of debugging, I still haven't been able to figure out what the problem is.
Can you please give me some advice? My training dataset is DIV2K_train and validation dataset is DIV2K_val.
Hi. It seems that your path to the dataset is not correct. The code did not find related images under the folder so the length of the dataset is 0.
How did you fix this issue?
How to correctly mention the path ?
IceClear
