This mod fix the following error patching hytale SpawnReferenceSystems when nullref, /!\ In the last version please intall hyxin from https://www.curseforge.com/hytale/mods/hyxin /!\ :

java.lang.NullPointerException: Cannot read the array length because "<local15>" is null at com.hypixel.hytale.server.npc.systems.SpawnReferenceSystems$MarkerAddRemoveSystem.onEntityRemove(SpawnReferenceSystems.java:166) at com.hypixel.hytale.component.Store.removeEntity(Store.java:848) at com.hypixel.hytale.component.CommandBuffer.lambda$removeEntity$0(CommandBuffer.java:292) at com.hypixel.hytale.component.CommandBuffer.consume(CommandBuffer.java:520) at com.hypixel.hytale.component.Store.addEntity(Store.java:599) at com.hypixel.hytale.component.Store.addEntity(Store.java:519) at com.hypixel.hytale.server.flock.StoredFlock.restoreNPCs(StoredFlock.java:61) at com.hypixel.hytale.server.spawning.spawnmarkers.SpawnMarkerSystems$Ticking.lambda$tick$0(SpawnMarkerSystems.java:355) at com.hypixel.hytale.component.CommandBuffer.consume(CommandBuffer.java:520) at com.hypixel.hytale.component.Store.tick(Store.java:1981) at com.hypixel.hytale.component.system.tick.ArchetypeTickingSystem.tick(ArchetypeTickingSystem.java:36) at com.hypixel.hytale.component.Store.tickInternal(Store.java:1927) at com.hypixel.hytale.component.Store.tick(Store.java:1897) at com.hypixel.hytale.server.core.universe.world.World.tick(World.java:398) at com.hypixel.hytale.server.core.util.thread.TickingThread.run(TickingThread.java:89) at java.base/java.lang.Thread.run(Thread.java:1474)

For install the mod create on root the directory earlyplugins and put the .jar inside + when you launch server use this parameters : java -jar Server/HytaleServer.jar --assets Assets.zip --accept-early-plugins

Patch Spawn Reference Systems ( Patch Game )