Headless launching broken on 1.21.11 #388
Description
When trying to launch 1.21.11 with -lwjgl the game crashes at boot with the below error
This is on Headless MC 2.8.0
---- Minecraft Crash Report ----
// Daisy, daisy...
Time: 2026-01-19 09:08:25
Description: Unexpected error
java.util.concurrent.CompletionException: java.lang.NullPointerException: Cannot invoke "java.nio.ByteBuffer.position()" because "$$0" is null
at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture.completeThrowable(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture$UniAccept.tryFire(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture$Completion.run(Unknown Source)
at bbf.a(SourceFile:59)
at cbr.d(SourceFile:169)
at cbv.d(SourceFile:23)
at cbr.E(SourceFile:143)
at cbr.bN(SourceFile:124)
at gfj.d(SourceFile:1339)
at gfj.j(SourceFile:966)
at net.minecraft.client.main.Main.main(SourceFile:250)
Caused by: java.lang.NullPointerException: Cannot invoke "java.nio.ByteBuffer.position()" because "$$0" is null
at com.mojang.blaze3d.buffers.Std140Builder.<init>(SourceFile:28)
at com.mojang.blaze3d.buffers.Std140Builder.intoBuffer(SourceFile:32)
at ilp.a(SourceFile:105)
at ilo.a(SourceFile:111)
at inl$c.a(SourceFile:168)
at inl$d.a(SourceFile:212)
at java.base/java.util.ArrayList.forEach(Unknown Source)
at inl$d.a(SourceFile:212)
at inl.a(SourceFile:146)
at inl.a(SourceFile:142)
... 10 more
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Thread: Render thread
Stacktrace:
at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture.completeThrowable(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture$UniAccept.tryFire(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture$Completion.run(Unknown Source)
at bbf.a(SourceFile:59)
at cbr.d(SourceFile:169)
at cbv.d(SourceFile:23)
at cbr.E(SourceFile:143)
-- Uptime --
Details:
JVM uptime: 8.808s
Wall uptime: 3.453s
High-res time: 3.313s
Client ticks: 59 ticks / 2.950s
Stacktrace:
at gfj.d(SourceFile:2477)
at gfj.c(SourceFile:1035)
at gfj.j(SourceFile:990)
at net.minecraft.client.main.Main.main(SourceFile:250)