Hello everyone. I faced a strange problem and not sure about how i can resolve the problem myself.
I was fine tuning wav2vec2 on two custom dataset and although previously it used to work fine now I am not sure what changed.
Issue#1 : The WER does not decrease, it always remains constant at 1.00 WER .
Issue#2 : When you make predictions you get blank transciptions.It happened twice and then i decided to run exactly on English Fine tuning blog post.
Fine-Tune Wav2Vec2 for English ASR with  Transformers 2
I am attaching an image below, the only change i made is on train and eval steps to experiment faster.
Please run the following colab notebook to reproduce results : Google Colaboratory 5