Error: Tensor type unknown to einops

[cbmtrx]

This is a new one that I haven't seen before.

`RuntimeError Traceback (most recent call last)
in
42
43 print("Regenerated audio samples")
---> 44 plot_and_hear(rearrange(generated, 'b d n -> d (b n)'), args.sample_rate)
45
46 for ix, gen_sample in enumerate(generated):

3 frames
/usr/local/lib/python3.8/dist-packages/einops/_backends.py in get_backend(tensor)
50 return backend
51
---> 52 raise RuntimeError('Tensor type unknown to einops {}'.format(type(tensor)))
53
54

RuntimeError: Tensor type unknown to einops <class 'NoneType'>`

[cbmtrx]

Could this be happening because the record_audio box is left checked—even though there's a custom path to a WAV file specified?