Champion Select problem ( over and over again)

This has happened again ( 4 times i think) When I jump in champion select, i just cannot see any champion. I can't ban I can't see what the others are picking And most importantly i can't pick. It's NOT like the championsa re there but i cannot see them, It's like I own 0 champions. Yet I still cannot see the others pick. Link will definately make it clear for you. Please fix this I keep losing points and promo games thanks to this bug.