New Minecraft Launcher crashes instantly on launch.
Other Launchers like MultiMC and TechnicLauncher work but i need the official launcher for modding.
MCL-11101
Launcher Crashes immediately after launch.
Resolved
Fixed
0
Sounds like you don't have locales set up correctly:
https://wiki.archlinux.org/index.php/Locale
And that we aren't catching the exceptions from broken locales.