mel_error is Nan

[fengshi-cherish]

mel_error is nan in the first step when training by config_v2.json, is there anyone who meets the same problem? And how to fix it?

[GeorgiyNaumenko]

Maybe I'm not in time, but anyway, I had the similar problem: my training process just stopped on first epoch and nothing happened for a long-long time. After that I uncommented right part of the condition there and this worked for me.