Hey, This is causing my server to shut down completely randomly. I have lots of armor stands so it's not easy to figure out which one is the issue, Is there anything i can do? Apart from starting all again making 50 holograms in hopes it wont happen again? Thankyou!

[20:59:21] [Paper Watchdog Thread/ERROR]: Server thread dump (Look for plugins here before reporting to Paper!):
[20:59:22] [Paper Watchdog Thread/ERROR]: ------------------------------
[20:59:22] [Paper Watchdog Thread/ERROR]: Current Thread: Server thread
[20:59:22] [Paper Watchdog Thread/ERROR]: PID: 23 | Suspended: false | Native: false | State: RUNNABLE
[20:59:22] [Paper Watchdog Thread/ERROR]: Stack:
[20:59:22] [Paper Watchdog Thread/ERROR]: java.lang.Throwable.getStackTraceElement(Native Method)
[20:59:22] [Paper Watchdog Thread/ERROR]: sun.reflect.GeneratedMethodAccessor55.invoke(Unknown Source)
[20:59:22] [Paper Watchdog Thread/ERROR]: sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[20:59:22] [Paper Watchdog Thread/ERROR]: java.lang.reflect.Method.invoke(Method.java:498)
[20:59:22] [Paper Watchdog Thread/ERROR]: com.gmail.filoghost.holographicdisplays.util.reflection.ReflectMethod.invoke(ReflectMethod.java:43)
[20:59:22] [Paper Watchdog Thread/ERROR]: com.gmail.filoghost.holographicdisplays.util.reflection.ReflectionUtils.getStackTraceElement(ReflectionUtils.java:55)
[20:59:22] [Paper Watchdog Thread/ERROR]: com.gmail.filoghost.holographicdisplays.nms.v1_15_R1.EntityNMSArmorStand.getId(EntityNMSArmorStand.java:143)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.PlayerChunkMap$EntityTracker.updatePlayer(PlayerChunkMap.java:1711)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.PlayerChunkMap.movePlayer(PlayerChunkMap.java:1345)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.ChunkProviderServer.movePlayer(ChunkProviderServer.java:827)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.PlayerConnection.a(PlayerConnection.java:1145)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.PacketPlayInFlying.a(SourceFile:122)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.PacketPlayInFlying$PacketPlayInPositionLook.a(SourceFile:18)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:23)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.PlayerConnectionUtils$$Lambda$4532/1644880593.run(Unknown Source)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.TickTask.run(SourceFile:18)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.MinecraftServer.ba(MinecraftServer.java:1038)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.MinecraftServer.executeNext(MinecraftServer.java:1031)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeAll(IAsyncTaskHandler.java:95)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:1172)
[20:59:22] [Paper Watchdog Thread/ERROR]: net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:934)
[20:59:22] [Paper Watchdog Thread/ERROR]: java.lang.Thread.run(Thread.java:748)
[20:59:22] [Paper Watchdog Thread/ERROR]: ------------------------------
[20:59:22] [Paper Watchdog Thread/ERROR]: --- DO NOT REPORT THIS TO PAPER - THIS IS NOT A BUG OR A CRASH ---
[20:59:22] [Paper Watchdog Thread/ERROR]: ------------------------------

Is there anything else before this? Like the server being unresponsive for a while, or other messages in the console?

Also, try disabling precise-hologram-movement in HD's configuration.

See #191, the problem has been fixed.