Hello @Milliw, this reads more like a harmless side effect of a third party tweak which is adding a LD_PRELOAD of libextest.so into Steam's environment before it is started.
Do you have any extra system packages that fiddle with libextest.so?
Looking at this a bit more, this is definitely a harmless quirk of a third party tool and not Steam itself: https://github.com/Supreeeme/extest/issues/2#issuecomment-1484166855
If you want to pursue this further, take it up with that project.
Closing as not-our-bug.
Nothing extracted yet.
Your system information
Please describe your issue in as much detail as possible:
Just saw this message appearing repeatedly in the logs. Seems to have no impact to me but thought reporting it would be good.
ERROR: ld.so: object '/usr/lib/steam/libextest.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.Steps for reproducing this issue:
Launch Steam.