In my recent install of steam, i keep getting this when running it
ILocalize::AddFile() failed to load file "public/steambootstrapper_english.txt".
[2017-07-13 22:44:20] Startup - updater built Jun 16 2014 11:16:02
libGL error: No matching fbConfigs or visuals found
libGL error: failed to load driver: swrast
SteamUpdateUI: An X Error occurred
X Error of failed request: BadValue (integer parameter out of range for operation)
Can anyone help?
Okay, here is the fix.
Simply re-install the graphics driver. 
So we know which graphics driver is the culprit, which one does your system use?
I have a Zotac GTX 1050 Ti
btw, who did try a secure install with Firejail, like explained there?
I’d appreciate any return before launching myself…
Hallo Herve5
Please see my reply to your post on this other thread - it may explain the source of your problem and the solution.
I hope this helps.
FWIW, I just installed Steal the way it was described in the url above (in Firejail), and it definitely runs proprely