Champ select bug

So I was queuing up with my friend to play blind pick and when the accept a match thing came up I clicked accept whoever when everyone was ready the league screen just went play but I could still see the bottom and top bars of the window but everything else was black. I messaged my friend in the queue and he said we were in champ select but I couldnt see anything. I ended up leaving it there and then the game made me dodge because I couldnt select a champ and now I have a 15 min cooldown