Server crashes when you enter a certain area


When I go to certain coordinates on our faction map the whole server crashes. I have to delete the playerdata of the player that is close to that location or it will crash every time they log in. It’s not inventory item related because I went there with nothing in my inventory and still crashed.

Server crash:
Crash report:

I tried downloading the world and going there on singleplayer and it didn’t crash. Any help would be greatly appreciated!

Minecraft: 1.12.2
SpongeAPI: 7.1.0-70763aa8
Sponge: 1.12.2-7.1.4
SpongeForge: 1.12.2-2768-7.1.4
Minecraft Forge: