Black Screen In champion select

Same problem!

As in, the champ select screen never loaded, and waiting caused you to dodge?

I had it first, just uninstall and reinstall It's literally the only way

Same. I had to repair it, which consumed a lot of my time. This has already happened to me 3 times, like seriously. Riot better do something First, no free mystery gifts for positive players at the end of this season, and now this??!?!!