Fine-tuning Conformer with Persian language
Hi, would you please share with me a collab notebook file for fine-tuning conformer_ctc_bpe? I want to use it for the Persian language. when I use the` ASR_CTC_Language_Finetuning.ipynb` notebook I got the desired result with all Citrinet models, but I can not use this notebook file for any of the CTC Conformer models. For example when I use `stt_en_conformer_ctc_large` model in the following part `results = analyse_ctc_failures_in_model(model)` I have this error:

`
FileNotFoundError: Caught FileNotFoundError in DataLoader worker process 0.
Original Traceback (most recent call last):
  File "/usr/local/lib/python3.7/dist-packages/torch/utils/data/_utils/worker.py", line 287, in _worker_loop
    data = fetcher.fetch(index)
  File "/usr/local/lib/python3.7/dist-packages/torch/utils/data/_utils/fetch.py", line 32, in fetch
    data.append(next(self.dataset_iter))
  File "/usr/local/lib/python3.7/dist-packages/webdataset/iterators.py", line 226, in map
    for sample in data:
  File "/usr/local/lib/python3.7/dist-packages/nemo/collections/asr/data/audio_to_text.py", line 671, in __next__
    audio_bytes, audio_filename = next(self.iterator)
  File "/usr/local/lib/python3.7/dist-packages/webdataset/iterators.py", line 282, in to_tuple
    for sample in data:
  File "/usr/local/lib/python3.7/dist-packages/webdataset/iterators.py", line 240, in rename
    for sample in data:
  File "/usr/local/lib/python3.7/dist-packages/webdataset/iterators.py", line 187, in shuffle
    for sample in data:
  File "/usr/local/lib/python3.7/dist-packages/webdataset/tariterators.py", line 153, in group_by_keys
    for fname, value in data:
  File "/usr/local/lib/python3.7/dist-packages/webdataset/tariterators.py", line 131, in tar_file_expander
    for source in data:
  File "/usr/local/lib/python3.7/dist-packages/webdataset/tariterators.py", line 86, in url_opener
    if handler(exn):
  File "/usr/local/lib/python3.7/dist-packages/webdataset/utils.py", line 12, in reraise_exception
    raise exn
  File "/usr/local/lib/python3.7/dist-packages/webdataset/tariterators.py", line 82, in url_opener
    stream = gopen.gopen(sample["url"], **kw)
  File "/usr/local/lib/python3.7/dist-packages/webdataset/gopen.py", line 192, in gopen
    return open(url, mode, buffering=bufsize)
FileNotFoundError: [Errno 2] No such file or directory: '/data/NeMo_ASR_SET/English/v2.0/train/audio_2568.tar'
`

How should I solve this error?

Thanks