Map Zone loads to 100%, then I am forced to quit the game.

[Cranstoon]

Hi, me and my friends recently made a server and played on it for around a week, however one night when we went to play I couldn't join, my friends could all join the server but I couldn't.

Basically, I can join the server, it loads the map meta, then the map zone, and then instantly after Map Zone gets to 100% I get the SORRY AN UNEXPECTED ERROR OCCURED prompt and have to quit the game.

At this point I've reinstalled all the mods, the game itself, gone into the server without the mods installed (this leads to the game just blanking on the home screen and I can't do anything to it), and done a whole bunch of things on the server side as well and I am all out of ideas. Adding to that the following is the only ERROR message in my console.txt :

ERROR: General , 1669936497302> 0> ExceptionLogger.logException> Exception thrown java.io.EOFException at DataInputStream.readInt.
ERROR: General , 1669936497303> 0> DebugLogStream.printException> Stack trace:
java.io.EOFException
at java.base/java.io.DataInputStream.readInt(Unknown Source)
at zombie.iso.IsoWorld.readWorldVersion(IsoWorld.java:2996)
at zombie.iso.IsoWorld.init(IsoWorld.java:2276)
at zombie.gameStates.GameLoadingState$1.runInner(GameLoadingState.java:268)
at zombie.gameStates.GameLoadingState$1.run(GameLoadingState.java:225)
at java.base/java.lang.Thread.run(Unknown Source)
ERROR: General , 1669936497304> 0> ExceptionLogger.logException> Exception thrown java.io.EOFException at DataInputStream.readInt.
ERROR: General , 1669936497304> 0> DebugLogStream.printException> Stack trace:
java.io.EOFException
at java.base/java.io.DataInputStream.readInt(Unknown Source)
at zombie.iso.IsoWorld.init(IsoWorld.java:2285)
at zombie.gameStates.GameLoadingState$1.runInner(GameLoadingState.java:268)
at zombie.gameStates.GameLoadingState$1.run(GameLoadingState.java:225)
at java.base/java.lang.Thread.run(Unknown Source)
LOG : General , 1669936497420> 0> LuaEventManager: adding unknown event "OnPreUIDraw"
LOG : General , 1669936497420> 0> LuaEventManager: adding unknown event "OnPostUIDraw"
LOG : General , 1669936502975> 0> UNKNOWN GLFW KEY CODE: 283
LOG : General , 1669936502976> 0> UNKNOWN GLFW KEY CODE: 283

I can't make any sense of it myself, and looking it up has resulted in things I've tried, that just haven't worked. Can anyone help? Thankyou :)
If you have questions I am more then happy to respond <3
p.s I am using mods, however me and my friends played, and my friend continues to play, on this exact server, with the same mods from the start, for a week and still has no problems.

[Spiffo]

Try uninstalling all the mods to make sure it's not on Vanilla's side. If you are able to run a vanilla server, then next step would be enabling mods one at a time to see which is troublesome. Report the issue on their workshop page :)