ValueError: Expect x to be a non-empty array or dataset.

[AuMaHub]

Traceback (most recent call last):
  File "C:\Users\auma-\anaconda3\envs\noise_reduce\lib\runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "C:\Users\auma-\anaconda3\envs\noise_reduce\lib\runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "c:\Users\auma-\.vscode\extensions\ms-python.python-2021.4.765268190\pythonFiles\lib\python\debugpy\__main__.py", line 45, in <module>
    cli.main()
  File "c:\Users\auma-\.vscode\extensions\ms-python.python-2021.4.765268190\pythonFiles\lib\python\debugpy/..\debugpy\server\cli.py", line 444, in main
    run()
  File "c:\Users\auma-\.vscode\extensions\ms-python.python-2021.4.765268190\pythonFiles\lib\python\debugpy/..\debugpy\server\cli.py", line 285, in run_file
    runpy.run_path(target_as_str, run_name=compat.force_str("__main__"))
  File "C:\Users\auma-\anaconda3\envs\noise_reduce\lib\runpy.py", line 265, in run_path
    return _run_module_code(code, init_globals, run_name,
  File "C:\Users\auma-\anaconda3\envs\noise_reduce\lib\runpy.py", line 97, in _run_module_code
    _run_code(code, mod_globals, init_globals,
  File "C:\Users\auma-\anaconda3\envs\noise_reduce\lib\runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "c:\VisualRepos\nnom-master\examples\rnn-denoise\main.py", line 306, in <module>
    main()
  File "c:\VisualRepos\nnom-master\examples\rnn-denoise\main.py", line 292, in main
    filtered_sig = voice_denoise(sig, rate, model, timestamp_size, numcep=y_train.shape[-1], plot=True) # use plot=True argument to see the gains/vad
  File "c:\VisualRepos\nnom-master\examples\rnn-denoise\main.py", line 84, in voice_denoise
    prediction = model.predict(feat, batch_size=timestamp_size)
  File "C:\Users\auma-\anaconda3\envs\noise_reduce\lib\site-packages\tensorflow\python\keras\engine\training.py", line 1644, in predict
    raise ValueError('Expect x to be a non-empty array or dataset.')
ValueError: Expect x to be a non-empty array or dataset.

I followed all of the previous information. But when I run main.py, I get an error. What is the problem? Please help me