Insync won’t start on Ubuntu-Mate

As requested

version (same output as before)

$ insync -v
1.3.15.36150

from

instead of the version from the repository

$ cat /etc/apt/sources.list.d/insync.list
deb http://apt.insynchq.com/ubuntu trusty non-free contrib

on KDE Neon (Ubuntu 16.04) works.