struggling to install on Debian bookworm

[mchester50]

I have tried to install AppimageLauncher using "sudo add-apt-repository ppa:appimagelauncher-team/stable and I receive a message File "/usr/bin/add-apt-repository", line 362, in
sys.exit(0 if addaptropo.main() else 1)" addaptropo.main has uparrows under it. When I install it using the .deb package all works until I try to integrate and run at which point I receive the following "Error-AppImageLauncher failed to register AppImage in system via libappimage. What am I doing wrong? Not this is on a current Debian bookworm. I tried to resolve the the first one by do "sudo apt install software-properties-common. No luck still doesn't work.

[TheAssassin]

The PPA has never been meant for Debian in the first place. They're specific to Ubuntu and it's one major difference between Ubuntu and Debian.

Just use the continuous release .deb files in the meantime. You can sudo dpkg -i the .deb file. If there's dependency problems, run sudo apt install -f afterwards. The latter command pulls in the necessary dependencies from Debian.