HOW I FIXED THE ''NOT SHOWING FRIENDLIST'' IN CLIENT

So, I had a problem with my client (EUW) that my friendlist was completely gone. I tried ''Initiate full repair'' many times and it didn't work. (See link for details.)

THE FIX: So what I tried to fix it was just... uninstall and install the client.

It fixed it all of the problems I had with the clients. I hope this problem will also fix for you guys.