[BUG] Friends Panel Not Available Chat only showsconnecting... & Not able to send friend requests

one and a half days ago this problem started where the friends panel is just black and the chat in client only shows connecting. the chat only works when i am ingame. please fix or tell me how to fix it i reinstalled league of legends i restarted my pc i signed out and restarted league of legends i downloaded hextech repair tool and used that and still no avail, please help as soon as possible .