The Original problem is here 1
I changed the pre-training model facebook/wav2vec2-base-100k-voxpopuli from to facebook/wav2vec2-base 1. It works. Everything is ok. However [facebook/wav2vec2-base-100k-voxpopuli] was pretrained on 100k hours data, I don’t know how much data were used to pretrain facebook/wav2vec2-base。 Maybe there is something wrong in facebook/wav2vec2-base-100k-voxpopuli?