Comment 2 for bug 1386021

Hello, you can change the security access for all user to that folder: '/home/tk423/.local/share/scratch-text-editor/unsaved/'. That'll do the trick. Open terminal, go to that specific path and try to sudo chmod 777 scratch-text-editor or sudo chmod 777 unsaved.

You may want to read about chmod to select and apply only the permission to fit the users you have in your system and not to ALL.