Delta chat appimage 1.22.2 does not start

debian 10

downloaded delta chat appimage and marked executable. Program does not
start.
Thanks.

can you try to open it with the teminal?

command line path to DeltaChat-1.22.2.AppImage returns
several pieces of information. And I do not know if for
privacy reasons I can display them here. Partly
it says The SUID sandbox helper binary was found, but is not configured correctly. Rather than run without sandboxing I’m aborting now. And
it says something about chrome-sandbox maybe is not owned
by root. So starting delta chat in command line does
not work either.

maybe use the .deb instead?

also there is the possibility of starting the appimage with --no-sandbox or changing a kernel setting:

sudo sysctl -w kernel.unprivileged_userns_clone=1

for more information on this see I have issues with Electron-based AppImages and their sandboxing — AppImage documentation

Maybe we could do things to improve this in the future, but I’m not sure if disabling sandboxing on appimages in general would be the right call.
Another option would be if we can detect this on startup to show the user an error message about this in a dialog.