Proton 5.21GE-1 doesn't work suddenly, so i launched steam on terminal to see what's happening.
this is the log i got
Launching proton manually on terminal works, at least it starts instead of crashing before starting like it's on the log
I don't have /usr/lib/python3.7 directory, i only have pytnon2, python2.7, python3.8, python3.9 in there
PC information OS is linux mint with latest kernel GPU driver is latest i can get for GTX 1050 CPU is i5-6700 24GB of ram