Smaysecs

So I have a free server plan in minehut. It was working fine until today. My friends and I logged on like usual, but the server keeps crashing everytime we type and send a message in chat. I tried restarting the server and made sure we don't have anything inside the server itself that's causing the crash. It only happens when a chat message gets sent, if it's a command then the server doesn't crash. It's getting a little annoying and I would like to fix it.