java.lang.NullPointerException: Cannot invoke "net.minecraft.world.entity.Entity.dD()" because "entity" is null

[haha44444]

随机崩溃
在出现以下提示后服务端关闭，每次出现问题的区块都不一样，但是每次都是这个方法net.minecraft.world.entity.Entity.dD()：
[22:16:50] [Region Scheduler Thread #1/ERROR]: [io.papermc.paper.threadedregions.TickRegionScheduler] Region #158 centered at chunk [-18, -4] in world 'world' failed to tick:
java.lang.NullPointerException: Cannot invoke "net.minecraft.world.entity.Entity.dD()" because "entity" is null
at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1512) ~[sandfolia-1.20.1.jar:git-SandFolia-"da3f06e"]
at io.papermc.paper.threadedregions.TickRegions$ConcreteRegionTickHandle.tickRegion(TickRegions.java:431) ~[sandfolia-1.20.1.jar:git-SandFolia-"da3f06e"]
at io.papermc.paper.threadedregions.TickRegionScheduler$RegionScheduleHandle.runTick(TickRegionScheduler.java:388) ~[sandfolia-1.20.1.jar:git-SandFolia-"da3f06e"]
at ca.spottedleaf.concurrentutil.scheduler.SchedulerThreadPool$TickThreadRunner.run(SchedulerThreadPool.java:540) ~[sandfolia-1.20.1.jar:git-SandFolia-"da3f06e"]
at java.lang.Thread.run(Thread.java:1583) ~[?:?]