Describe the bug
Getting this error everytime a player leaves on my 1.13.2 Hub: https://mcpaste.io/4aeb52ebdd72b402

To Reproduce
Steps to reproduce the behavior:

1. Join
2. Join a server or disconnect
3. See error in console

Expected behavior
I suppose for it to not spam the error, and hopefully this error isnt causing the hubs to crash.

Screenshots
none.

Version Info
https://pastebin.com/bgRRmdKB

Additional context
none.

I got a similar error that happens whenever a player joins and then disconnects the server before even entering, and it spams the console horribly, though apart from the spam in doesn't seem to cause any issue otherwise.

Here's a part of the error (it's just the same error repeating a ton of times)
https://pastebin.com/x4FBmW0d
And here's my dump file
https://pastebin.com/spv7uEpK

It's also maybe worth noting that it doesn't fire the PlayerQuitEvent, since no leave messages are sent when the player disconnects in such a way.

Yep have no clue how to fix it, gone back many versions, tried all different Jenkins builds, even the official spigot releases. Still pops up.

Was possibly due to ViaVersion, since i've realised its gone now since the latest DEV updates.