multi_coil key is not provided in the sample data

[alirezasamadii]

Hello, I was traing to run this code, I forked the code and downloaded the sample data from dropbox.
However It seems multi_coil is one key to be available in the data to train or validate but there is not.

'matlab/dataset/train_data.h5/multicoil_train'

Global seed set to 42
Multi-processing is handled by Slurm.
GPU available: True, used: True
TPU available: False, using: 0 TPU cores
IPU available: False, using: 0 IPUs
Traceback (most recent call last):
File "/trinity/home/xx/SSL-QALAS/train_qalas.py", line 212, in
run_cli()
File "/trinity/home/xx/SSL-QALAS/train_qalas.py", line 208, in run_cli
cli_main(args)
File "/trinity/home/xx/SSL-QALAS/train_qalas.py", line 87, in cli_main
trainer.fit(model, datamodule=data_module)
File "/trinity/home/xx/venv_ssl_qalas/lib/python3.7/site-packages/pytorch_lightning/trainer/trainer.py", line 552, in fit
self._run(model)
File "/trinity/home/xx/venv_ssl_qalas/lib/python3.7/site-packages/pytorch_lightning/trainer/trainer.py", line 855, in _run
self.data_connector.prepare_data(model)
File "/trinity/home/xx/venv_ssl_qalas/lib/python3.7/site-packages/pytorch_lightning/trainer/connectors/data_connector.py", line 74, in prepare_data
self.trainer.datamodule.prepare_data()
File "/trinity/home/xx/venv_ssl_qalas/lib/python3.7/site-packages/pytorch_lightning/core/datamodule.py", line 428, in wrapped_fn
fn(*args, **kwargs)
File "/trinity/home/xx/SSL-QALAS/fastmri/pl_modules/data_module_qalas.py", line 254, in prepare_data
use_dataset_cache=self.use_dataset_cache_file,
File "/trinity/home/xx/SSL-QALAS/fastmri/data/mri_data_qalas.py", line 266, in init
files = list(Path(root).iterdir())
File "/opt/ohpc/pub/easybuild/software/Python/3.7.4-GCCcore-8.3.0/lib/python3.7/pathlib.py", line 1090, in iterdir
for name in self._accessor.listdir(self):
NotADirectoryError: [Errno 20] Not a directory: 'matlab/dataset/train_data.h5/multicoil_train'