The server was fine one moment then suddenly there was intense lag and everyone was kicked. Then this error showed up in console: https://pastebin.com/37ZEwsNi . Console isn't responding and no one can log onto it. Also all mcmmo parties were wiped for some reason. My server is a Spigot 1.10 server. Plugins: http://prntscr.com/fc5b6n Server Startup: https://pastebin.com/HtKkkK5V There are a TON of issues happening afterwards including: - A regular player joined and it welcomed him as if he were a new player. It wiped his inventory and he spawned at spawn. - Tons of lag - All mcmmo parties were wiped - Probably more I will discover eventually What's causing the error and how can I fix it?