The Appimage comes from here. FYI, I have just repaired my Joplin on my 2nd computer. I saw the end of the terminal output: “desktop icon created” or something like that. So I looked for this launcher and it works (in fact I continued to use my old XFCE dashboard launcher (created manually). Unfortunately, it doesn’t work on my (1st) laptop at the moment.
Here, the terminal output (little change):
$ /home/user/.joplin/Joplin.AppImage [2375:0314/113819.985175:FATAL:setuid_sandbox_host.cc(157)] The SUID sandbox helper binary was found, but is not configured correctly. Rather than run without sandboxing I'm aborting now. You need to make sure that /tmp/.mount_Joplin1SYOqM/chrome-sandbox is owned by root and has mode 4755. Trappe pour point d'arrêt et de trace (core dumped)
I don’t understand “Trappe pour point d’arrêt et de trace” even it is in French. Trappe=hatch; Point d’arrêt=breakpoint? Trace=track.