Cannot load game

I am using Mac Client.

I encountered this issue many many times since the new patch updated. I am able to choose champion but it turns into a black screen instead of a loading screen. And I could not do anything with the black screen, but restarting the computer.

After restarted, I am successful to launch the client but cannot reconnect. It turns into black screen again and the process repeats endlessly.

I think this issue is really annoying and I guess I am not the only one having this issue.

So, please, fix it as soon as possible, Riot.