Description: Exception ticking world

java.lang.NullPointerException
at net.minecraft.world.World.isOutOfBuildLimitVertically(World:191)
at net.minecraft.world.World.getBlockState(World:405)
at net.minecraft.server.world.ServerWorld.handler$bjb000$tick(ServerWorld:5580)
at net.minecraft.server.world.ServerWorld.tick(ServerWorld)
at net.minecraft.server.MinecraftServer.tickWorlds(MinecraftServer:871)
at net.minecraft.server.MinecraftServer.tick(MinecraftServer:811)
at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer:91)
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer:670)
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer:257)
at net.minecraft.server.MinecraftServer$$Lambda$7003/479756128.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)

I was breaking a tree, and it crashed when i mined a single block