This means your development/validation file contains a file (or more) that generates inf loss.
If you’re using v.0.5.1 release, modify your files as mentioned here: How to find the which file is making loss inf - #9 by SamahZaro
Run a separate training on your /home/javi/train/dev.csv file, trace your printed output for any lines that saying
The following files caused an infinite (or NaN) loss: … .wav
, remove those wav files from your data.