FreeFileSync Forum

Now that I've posted more than once, here is the link:
https://tutorialforlinux.com/2017/12/17/how-to-install-freefilesync-on-ubuntu-18-04-bionic-gnulinux/

Also, when I attempt closing the pgm, I get this:
Cannot write file "/opt/FreeFileSync/GlobalSettings.xml".

Error Code 13: Permission denied [open]

I installed FreeFileSync following a guide listed on line (can't show the link because it's my first post).

When I start the app, I get this error:
Failed to load module "canberra-gtk-module"

Any ideas?