[Client] Champion Select Bug [Client]

Approximately 5 minutes ago, a my friends and I -4 all together- were going to play a match, and when we went to accept a match that was found, the screen turned completely black, except for the LoL chat. This happened to 3 out of 4 of us, and we didn't get out of the screen (the black champion select menu) until one of us exited the client. I apologize for the lack of detail within this post, but I figured it may be useful to post on it in-case others are also having this issue.