Client crashes after champion select and during start of loading screen. (Critical Error)

This has happened to me twice now and has caused me to be leaverbustered and unable to play the game as of now. this problem persists and no one has offered a fix, especially the people we pay to play this game. (a critical error has occured and it must be terminated) For two days now I have been unable to play and also have a timer on my q now thanks to the broken nonsense. pls fix. I spend too much money on skins etc not to be able to play this silly game.

(windows 10 pro)