From the error message it looks like the problem starts with Steam not running. My guess to a potential resolution with this would be to make sure you have -nosteam added to your command line. Could be off base though seeing as I’ve never seen this error and have zero knowledge of Linux. Just speculating here, and going by the callstack’s info. Past that, I don’t think I have any suggestions
If that doesn’t fix it, I think you will need to contact the Dev’s about this one or wait for them to respond here.
With any luck, the update that was just released should address the issue linux servers have been having. One of the patch notes is:
“* Linux Dedi Server should now be able to load Mods without crashing :)” I know this is affecting many people, good luck, and please let us know if it’s working or not, either way.