I have recently installed Ubuntu 18.04.6 LTS and then installed Fritzing using packages from official repository by using below command
sudo apt-get install fritzing
Then on first launch it showed three windows with errors
Oops!
Sorry, we have a problem with the swapping mechanism.
Fritzing still works, but you won't be able to change parts properties.Fritzing
Cannot read file /home/username/bins/core.fzb:
No such file or directory.Fritzing
Fritzing cannot load the parts bin
and the parts list was empty as the result. I need to run Fritzing for my hobby project.