I found the problem. Turns out something deleted my ~/Templates folder and this in turn made the ~/snap/electronplayer/10/.config/user-dirs.dirs file to have a corrupted record:
XDG_TEMPLATES_DIR="$HOME/"
Removing the record from the file causes the program to regenerate the record with the “correct” value:
XDG_TEMPLATES_DIR="$HOME/Templates"
It does not matter that the Directory does not exist in my system…
BTW it seems that many errors lead to snaps not starting without printing errors. I tried dropping the config as suggested here and once the problem was solved I repeated the process until I spotted the problematic file.
Not sure why no log files are generated but I wish there was a way to get more info on similar problems.