weird things happening on servers


so today it was normal but then i wanted to play the server it said
failed:login i restarted my pc and the game but that again. then i was going to go to (mineplex but there was just 19 players that was weird then i tried (hypixel but again failed:loggin weird right i tried on many servers but there was the failed:loggin so if it happend to you guys send me a comment.