[Bug Report] World becomes corrupted after importing `.construction` file

[D3V1L0M3N]

Describe the bug Importing a .construction file into a 1.18.2 world causes the game to hang/crash and generate errors in game log

Expected behavior The game should not crash after importing .construction file into the world

To Reproduce Steps to reproduce the behavior:

1. Open Minecraft 1.18.2 and load sample world Hogwarts then Save and Quit to Title
2. Open Amulet and load sample world Hogwarts
3. Create selection using 3D Editor and export as Hogwarts.construction using Platform 'java' & Version '1, 18, 0'
4. In Amulet, open sample world Creative
5. Import file Hogwarts.construction and save/close world
6. Re-open world Creative in Amulet to confirm the import was successful
7. Launch Minecraft, load world Creative
8. Fly around the imported area. At first, things load in fine but as you continue to fly around the game will eventually cease to render new chunks. Attempting to Save and Quit to Title will freeze the game. The game log will also output multiple errors.

Screenshots Sample world Hogwarts in Minecraft

3D Selection being exported

.construction file being imported

Reopen world to confirm import succeeded

Environment OS: Windows 10, Update 22H2 Minecraft Platform: Java Minecraft Version: 1.18.2 Amulet Version: 0.10.25

Additional context My client log can be found here The relevant portion is the following stacktrace:

[00:53:05] [Worker-Main-45/ERROR]: Caught exception in thread Thread[Worker-Main-45,10,main]
java.lang.NullPointerException: Cannot invoke "cqu.a(int, int, int)" because "$$2" is null
    at din.i(SourceFile:96) ~[din.class:?]
    at dil.c(SourceFile:143) ~[dil.class:?]
    at dik.a(DynamicGraphMinFixedPoint.java:170) ~[dik.class:?]
    at dih.a(SourceFile:129) ~[dih.class:?]
    at dio.a(SourceFile:45) ~[dio.class:?]
    at adz.a(SourceFile:135) ~[adz.class:?]
    at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625) ~[?:?]
    at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) ~[?:?]
    at adz.a(SourceFile:135) ~[adz.class:?]
    at adz.e(SourceFile:171) ~[adz.class:?]
    at adz.a(SourceFile:107) ~[adz.class:?]
    at adl.b(SourceFile:62) ~[adl.class:?]
    at avc.h(SourceFile:91) ~[avc.class:?]
    at avc.a(SourceFile:146) ~[avc.class:?]
    at avc.run(SourceFile:102) ~[avc.class:?]
    at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1395) [?:?]
    at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373) [?:?]
    at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182) [?:?]
    at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655) [?:?]
    at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622) [?:?]
    at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165) [?:?]

World Files Hogwarts.zip Creative.zip

[D3V1L0M3N]

Please note:

In the screenshots I provided. It is shown I'm importing the .construction file into a world called "Test". That was a fresh, blank 1.18.2 world. The import worked fine with zero issues in that world and did not cause the game to crash.

The issue was re-produced when attempting to import the .construction file into world "Creative". I just didn't take screenshots during that import and can't really be bothered wasting another 45 minutes running through it all over again for one picture.

However, as it may be relevant, here's a screenshot I did happen to take after which shows the exact placing of the import into "Creative":

[D3V1L0M3N]

This issue seems to be related to: https://github.com/Amulet-Team/Amulet-Map-Editor/issues/736

[gentlegiantJGC]

Looks like an issue with the lighting data. din.i is net.minecraft.world.level.lighting.LayerLightSectionStorage int getStoredLevel(long) cqu.a is net.minecraft.world.level.chunk.DataLayer int get(int,int,int)

[D3V1L0M3N]

Is there any way to resolve this issue myself? Through mods or similar? Or is this an issue that would require a fix be implemented by Amulet? I've seen there are mods/server plugins that can 'clean' up broken lighting, so curious if that's relevant.

[gentlegiantJGC]

Clearing the world cache data may solve the issue. I will need to look into what is actually causing it

[D3V1L0M3N]

I've just ran through the steps again after optimizing both worlds in Minecraft 1.18.2 and erasing cache. I'm afraid to report that it did not make any difference and the issue was reproduced exactly the same.

One thing I have forgotten to mention, though, is that the sample world "Creative" has been used in a Spigot 1.18.2 Server. The plugins used were mostly all functionality and not content-adding. Thought I should mention this as it could be relevant. If desired I can provide the list of plugins (total 17).