[CLIENT] Champion select screen not loading

Myself and two friends were starting a 5v5 intermediate bot match. Jumped into queue, everyone hit Accept when a match was found, but two of us never got a champion select screen to come up. The entire Client box was black. Our third friend got into Champ Select and said that it showed us there but not selecting anything. When the timer ran out to start the match, we were booted from the Champ Select, with a penalty timer of 5 minutes on us for dropping out of Champ Select.