"Oof the game failed to start. Please try again or buzz leagueoflegends.com"

The game crashed after champion selection and this message appeared. I restarted the game and the PC, but I wasn't able to open the game (RADS ERROR). There is no official message from Riot about the problem here. **What is happening? **

[zombie-brand-mindblown] [zombie-nunu-tears] [zombie-nunu-bummed] [slayer-jinx-unamused]