Attributes reset when changing class

Hi, I would like to report a bug...
It didn't happen before, but now it does, and I don't know why, I've done several things like: update node, redownload the clean project and other things.
When you change classes, the hero's attributes simply stay at 1 and the next level appears "NaN".
Another bug...
When you type "/finduser" 0 players appear online.