Problem while entering a game's champions select

I wanted to play with my friend so i invited him to a room (team lobby) we was waiting a game as normally but after all the 8 other players accepted the game to start my own did'nt and i just got a black screen all other the lol's window . I hope you will fix this issue and i will soon continue to play normally without get kick for a lot of time for nothing . Thank you Daniel .