BEFORE CONTINUING:

• Always check you are using the latest version of these mods and its dependencies
• Remove known problematic rendering mods such as Optifine, Sodium and others

Version-Loader

1.20.1-FORGE

Moonlight Lib Version

2.13.64

Describe the Issue

game crashed unsure why

Log Attachment

crash-2025-02-16_11.42.22-server.txt

OPTIONAL: To Produce

launch game> select single player> open world>crash>X

note:backported mod to (2.13.63) and it works unsure why update breaks it

OPTIONAL: Which mods are affected?

supplementeries

amendments

sawmill

target dummy

supplementeries squared

Getting the same issue. Impressed with how fast someone logged a ticket for it already XD.

In summary, this seems like the "level close memory leak fix" has a problem.
java.lang.NullPointerException: Cannot invoke "net.minecraft.world.level.Level.close()" because "level" is null

Same, game crashes on startup with
Error: java.lang.NullPointerException: Cannot invoke "net.minecraft.world.level.Level.close()" because "level" is null
MoonlightLib version 2.13.64 forge.

I suspect this is also the cause of the world failing to load in my pack, causing me to fall endlessly.

EDIT: Turns out Lithostitched is completely broken on world reload.

2.13.64 have the undetected woodType/leavesType added. Can you isolate the mod that is causing this problem?

EDIT: Looks like the cause is Supplementaries (try disable it first) and launch it

Related to MehVahdJukaar/Supplementaries#1365

The error is similar to the crash-report.

Can confirm with 2.13.56, but not with 2.13.55 meaning 2.13.56 might have implemented this issue somehow (might also be Supplementaries' fault.

Is this still an issue?

I can say the issue is no longer present in latest versions of both Moonlight and Supplementaries. I suggest closing the issue.