Server error, help required.

[mild shoal]

So, I've been running a private zomboid server for a few months now and so far things have gone smooth. Earlier today we did an update, adding a new mod to the server. After this update all other players could connect without issue, while me, the head admin cant get in. The logs for the server are spitting out an error that has no search result online. I'm desperate for help, any would be loved and appreciated.

ERROR: General , 1665376534790> 1,814,102,497> GameServer.mainLoopDealWithNetData> Error with packet of type: Login for Jager
ERROR: General , 1665376534791> 1,814,102,497> java.lang.NullPointerException: Cannot invoke "zombie.core.raknet.UdpConnection.startPacket()" because "<local3>" is null

[mild shoal]

https://steamcommunity.com/sharedfiles/filedetails/?id=2873551927
https://steamcommunity.com/sharedfiles/filedetails/?id=2873551890
https://steamcommunity.com/sharedfiles/filedetails/?id=2873551865
https://steamcommunity.com/sharedfiles/filedetails/?id=2873551834

These are the errors I'm getting, they seem random everytime.

[open aspen]

This looks like there are just a bunch of file missing or login errors

Try doing a full reinstall?
First, uninstall the game, then go to "Steam\steamapps\common\ProjectZomboid" and make sure there are no leftover files or folders there.
Then just install the game again and see if that helps.

[mild shoal]

I've tried this a few times now, I've wiped everything relating to the game from my pc. After a fresh install, nothing changed.