Bug - Yellow Box Covering Champion Selection

> Yellow Box just appeared and with x button. i tried clicking the x button but its not clossing. [URL=http://s1159.photobucket.com/user/agno/media/Untitled_zpsuyk8wxx3.jpg.html][IMG]http://i1159.photobucket.com/albums/p626/_agno_/Untitled_zpsuyk8wxx3.jpg[/IMG][/URL]