https://bugs.winehq.org/show_bug.cgi?id=54813
--- Comment #8 from Thomas totinous.31@hotmail.fr --- according to what you said, I purged wine from the device and installed again the "staging" from the site. I'm know sure of what version I do have.
I tried to launch LoL again but the same issue appeared but with a different Program Error Details (however it still says that I have a Wine build : wine-5.18 (TkG Staging Esync Fsync Vkd3d)...which is wrong...)