TypeError: object of type 'NoneType' has no len()

[545089467]

使用MuseTalk的example时出现以下错误

Traceback (most recent call last):
File "/root/miniconda3/lib/python3.8/site-packages/gradio/queueing.py", line 495, in call_prediction
output = await route_utils.call_process_api(
File "/root/miniconda3/lib/python3.8/site-packages/gradio/route_utils.py", line 232, in call_process_api
output = await app.get_blocks().process_api(
File "/root/miniconda3/lib/python3.8/site-packages/gradio/blocks.py", line 1561, in process_api
result = await self.call_function(
File "/root/miniconda3/lib/python3.8/site-packages/gradio/blocks.py", line 1179, in call_function
prediction = await anyio.to_thread.run_sync(
File "/root/miniconda3/lib/python3.8/site-packages/anyio/to_thread.py", line 31, in run_sync
return await get_asynclib().run_sync_in_worker_thread(
File "/root/miniconda3/lib/python3.8/site-packages/anyio/_backends/_asyncio.py", line 937, in run_sync_in_worker_thread
return await future
File "/root/miniconda3/lib/python3.8/site-packages/anyio/_backends/_asyncio.py", line 867, in run
result = context.run(func, *args)
File "/root/miniconda3/lib/python3.8/site-packages/gradio/utils.py", line 695, in wrapper
response = f(*args, **kwargs)
File "/root/Linly-Talker/src/cost_time.py", line 7, in wrapper
result = func(*args, **kwargs)
File "webui.py", line 365, in MuseTalker_response
video = musetalker.inference_noprepare(driven_audio, source_video, bbox_shift, batch_size, fps=25)
File "/root/Linly-Talker/TFG/MuseTalk.py", line 352, in inference_noprepare
for i, (whisper_batch,latent_batch) in enumerate(tqdm(gen,total=int(np.ceil(float(video_num)/batch_size)))):
File "/root/miniconda3/lib/python3.8/site-packages/tqdm/std.py", line 1178, in iter
for obj in iterable:
File "/root/Linly-Talker/./Musetalk/musetalk/utils/utils.py", line 49, in datagen
idx = (i+delay_frame)%len(vae_encode_latents)
TypeError: object of type 'NoneType' has no len()