[CLIENT] Accepting Doom Bots Match gave black screen

After accepting a match for Doom Bots Gauntlet, myself and 3 of my friends in queue together couldn't see champ select, just a black screen. I could still use chat, but couldn't hear champ select music or anything. I "dodged" (and was punished cries) , and logged back in and when we tried to enter champ select again it was fine.