Same for me, Manjaro too, I have jdk-openjdk version 16.0.1.u9-1 installed, installed libstdc++5 because someone on the aur site said you needed that, also deleted the ~/.minecraft/launcher folder, still, crashed after downloading all the files when attempting to launch the launcher.
For me too, starting with LC_ALL=C minecraft-launcher works.
OK [Info: 2021-07-18 06:34:33.816627939: UpdatePistonComponent.cpp(70)] Piston update succeeded, writing version file to: .../.minecraft/launcher/bootstrap.version ! [Info: 2021-07-18 06:34:33.816746520: UpdatePistonComponent.cpp(70)] Piston update succeeded, writing version file to: .../.minecraft/launcher/.version ! [Info: 2021-07-18 06:34:33.816813735: NetQueue.cpp(183)] NetQueue: Initiating shutdown. [Info: 2021-07-18 06:34:33.816841046: NetQueue.cpp(197)] NetQueue: Waiting for worker thread to finish... [Info: 2021-07-18 06:34:33.816881135: NetQueue.cpp(689)] NetQueue: Worker thread shutting down. [Info: 2021-07-18 06:34:33.822254367: NetQueue.cpp(200)] NetQueue: Done. [Info: 2021-07-18 06:34:33.822309120: mainLinux.cpp(244)] Update complete. [Info: 2021-07-18 06:34:33.823382546: WindowGTK.cpp(41)] Closing the window [Info: 2021-07-18 06:34:33.823444484: NetQueue.cpp(183)] NetQueue: Initiating shutdown. [Info: 2021-07-18 06:34:33.823472774: NetQueue.cpp(188)] NetQueue: No thread currently running [Info: 2021-07-18 06:34:33.823500584: mainLinux.cpp(500)] Attempting to start the launcher [Info: 2021-07-18 06:34:33.823524377: mainLinux.cpp(118)] Window closing, exiting process https://launchermeta.mojang.com/v1/products/launcher/6f083b80d5e6fabbc4236f81d0d8f8a350c665a9/linux.json terminate called after throwing an instance of 'std::logic_error' what(): basic_string::_M_construct null not valid [Fatal: 2021-07-18 06:34:34.539279715: mainLinux.cpp(508)] Launcher crashed while executing... signal: 6 [Info: 2021-07-18 06:34:34.539343292: mainLinux.cpp(511)] Freshly updated launcher crashed.
Finite Leigh
Same for me, Manjaro too, I have jdk-openjdk version 16.0.1.u9-1 installed, installed libstdc++5 because someone on the aur site said you needed that, also deleted the ~/.minecraft/launcher folder, still, crashed after downloading all the files when attempting to launch the launcher.
For me too, starting with LC_ALL=C minecraft-launcher works.
OK
[Info: 2021-07-18 06:34:33.816627939: UpdatePistonComponent.cpp(70)] Piston update succeeded, writing version file to:
.../.minecraft/launcher/bootstrap.version !
[Info: 2021-07-18 06:34:33.816746520: UpdatePistonComponent.cpp(70)] Piston update succeeded, writing version file to:
.../.minecraft/launcher/.version !
[Info: 2021-07-18 06:34:33.816813735: NetQueue.cpp(183)] NetQueue: Initiating shutdown.
[Info: 2021-07-18 06:34:33.816841046: NetQueue.cpp(197)] NetQueue: Waiting for worker thread to finish...
[Info: 2021-07-18 06:34:33.816881135: NetQueue.cpp(689)] NetQueue: Worker thread shutting down.
[Info: 2021-07-18 06:34:33.822254367: NetQueue.cpp(200)] NetQueue: Done.
[Info: 2021-07-18 06:34:33.822309120: mainLinux.cpp(244)] Update complete.
[Info: 2021-07-18 06:34:33.823382546: WindowGTK.cpp(41)] Closing the window
[Info: 2021-07-18 06:34:33.823444484: NetQueue.cpp(183)] NetQueue: Initiating shutdown.
[Info: 2021-07-18 06:34:33.823472774: NetQueue.cpp(188)] NetQueue: No thread currently running
[Info: 2021-07-18 06:34:33.823500584: mainLinux.cpp(500)] Attempting to start the launcher
[Info: 2021-07-18 06:34:33.823524377: mainLinux.cpp(118)] Window closing, exiting process
https://launchermeta.mojang.com/v1/products/launcher/6f083b80d5e6fabbc4236f81d0d8f8a350c665a9/linux.json
terminate called after throwing an instance of 'std::logic_error'
what(): basic_string::_M_construct null not valid
[Fatal: 2021-07-18 06:34:34.539279715: mainLinux.cpp(508)] Launcher crashed while executing... signal: 6
[Info: 2021-07-18 06:34:34.539343292: mainLinux.cpp(511)] Freshly updated launcher crashed.