Lutris does not download any game

Hi , i’m trying to download lol via lutris but lutris can’t find any games . i couldn’t even login with my account. And it gives me this error (Unable to install this game lutris couldn’t find any installer) and its for all games. Tried overwatch and Witcher 3 same time but can’t add any game on library. already tried remove and purge options for 4 times.