[Bug]: Unable to load on 1.21.2+

[MC-Nirvana]

Description

1.21.10 Unable to load this Mod properly

Version

1.0.3

Minecraft and NeoForge Version

1.21.10 NeoForge 21.10.64

Expected outcome

Normal game loading

Minimal Reproducible Example

On the log, it is the minimum load

Logs or Crash Report

---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 2025-12-15 20:43:30
Description: Mod loading failures have occurred; consult the issue messages for more details

net.neoforged.neoforge.logging.CrashReportExtender$ModLoadingCrashException: Mod loading has failed


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Render thread
Stacktrace:
	at TRANSFORMER/neoforge@21.10.64/net.neoforged.neoforge.fluids.CauldronFluidContent.register(CauldronFluidContent.java:123) ~[neoforge-21.10.64-universal.jar:?] {}
-- Mod loading issue --
Details:
	Mod file: <No mod information provided>
	Failure message: An uncaught parallel processing error has occurred.
		java.lang.IllegalArgumentException: Duplicate cauldron registration for block Block{minecraft:cauldron}.
	Mod version: <No mod information provided>
	Mod issues URL: <No issues URL found>
	Exception message: java.lang.IllegalArgumentException: Duplicate cauldron registration for block Block{minecraft:cauldron}.
Stacktrace:
	at TRANSFORMER/neoforge@21.10.64/net.neoforged.neoforge.fluids.CauldronFluidContent.register(CauldronFluidContent.java:123) ~[neoforge-21.10.64-universal.jar:?] {}
	at TRANSFORMER/neoforge@21.10.64/net.neoforged.neoforge.fluids.RegisterCauldronFluidContentEvent.register(RegisterCauldronFluidContentEvent.java:51) ~[neoforge-21.10.64-universal.jar:?] {}
	at TRANSFORMER/neoforge@21.10.64/net.neoforged.neoforge.fluids.CauldronFluidContent.init(CauldronFluidContent.java:111) ~[neoforge-21.10.64-universal.jar:?] {}
	at TRANSFORMER/neoforge@21.10.64/net.neoforged.neoforge.internal.RegistrationEvents.init(RegistrationEvents.java:18) ~[neoforge-21.10.64-universal.jar:?] {}
	at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[?:?] {}
	at TRANSFORMER/minecraft@1.21.10/net.minecraft.server.packs.resources.SimpleReloadInstance.lambda$prepareTasks$2(SimpleReloadInstance.java:72) ~[minecraft-client-patched-21.10.64.jar:?] {}
	at TRANSFORMER/minecraft@1.21.10/net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:156) ~[minecraft-client-patched-21.10.64.jar:?] {neoforge:access_transformer}
	at TRANSFORMER/minecraft@1.21.10/net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[minecraft-client-patched-21.10.64.jar:?] {}
	at TRANSFORMER/minecraft@1.21.10/net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:130) ~[minecraft-client-patched-21.10.64.jar:?] {neoforge:access_transformer}
	at TRANSFORMER/minecraft@1.21.10/net.minecraft.util.thread.BlockableEventLoop.runAllTasks(BlockableEventLoop.java:115) ~[minecraft-client-patched-21.10.64.jar:?] {neoforge:access_transformer}
	at TRANSFORMER/minecraft@1.21.10/net.minecraft.client.Minecraft.runTick(Minecraft.java:1292) [minecraft-client-patched-21.10.64.jar:?] {}
	at TRANSFORMER/minecraft@1.21.10/net.minecraft.client.Minecraft.run(Minecraft.java:928) [minecraft-client-patched-21.10.64.jar:?] {}
	at TRANSFORMER/minecraft@1.21.10/net.minecraft.client.main.Main.main(Main.java:229) [minecraft-client-patched-21.10.64.jar:?] {}
	at net.neoforged.fml.startup.Client.main(Client.java:19) [loader-10.0.32.jar:10.0] {}
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[?:?] {}
	at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?] {}
	at io.github.zekerzhayard.forgewrapper.installer.Main.main(Main.java:67) [ForgeWrapper-prism-2025-12-07.jar:prism-2025-12-07] {}
	at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:105) [NewLaunch.jar:?] {}
	at org.prismlauncher.EntryPoint.listen(EntryPoint.java:129) [NewLaunch.jar:?] {}
	at org.prismlauncher.EntryPoint.main(EntryPoint.java:70) [NewLaunch.jar:?] {}


-- System Details --
Details:
	Minecraft Version: 1.21.10
	Minecraft Version ID: 1.21.10
	Operating System: Windows 11 (amd64) version 10.0
	Java Version: 21.0.3, Microsoft
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
	Memory: 8313351800 bytes (7928 MiB) / 8589934592 bytes (8192 MiB) up to 8589934592 bytes (8192 MiB)
	CPUs: 12
	Processor Vendor: GenuineIntel
	Processor Name: 12th Gen Intel(R) Core(TM) i5-12490F
	Identifier: Intel64 Family 6 Model 151 Stepping 2
	Microarchitecture: Alder Lake
	Frequency (GHz): 3.00
	Number of physical packages: 1
	Number of physical CPUs: 6
	Number of logical CPUs: 12
	Graphics card #0 name: NVIDIA GeForce RTX 4060
	Graphics card #0 vendor: NVIDIA
	Graphics card #0 VRAM (MiB): 8188.00
	Graphics card #0 deviceId: VideoController1
	Graphics card #0 versionInfo: 32.0.15.9144
	Memory slot #0 capacity (MiB): 16384.00
	Memory slot #0 clockSpeed (GHz): 2.67
	Memory slot #0 type: DDR4
	Memory slot #1 capacity (MiB): 16384.00
	Memory slot #1 clockSpeed (GHz): 2.67
	Memory slot #1 type: DDR4
	Virtual memory max (MiB): 54082.03
	Virtual memory used (MiB): 43027.21
	Swap memory total (MiB): 21504.00
	Swap memory used (MiB): 4012.59
	Space in storage for jna.tmpdir (MiB): <path not set>
	Space in storage for org.lwjgl.system.SharedLibraryExtractPath (MiB): <path not set>
	Space in storage for io.netty.native.workdir (MiB): <path not set>
	Space in storage for java.io.tmpdir (MiB): available: 503647.22, total: 952553.00
	Space in storage for workdir (MiB): available: 588572.44, total: 953853.06
	JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xms8192m -Xmx8192m
	Debug Flags: 0 total; 
	Class Processors: 
		00.00%: neoforge:computing_frames (marker)
		00.00%: neoforge:runtime_enum_extender
		05.73%: neoforge:access_transformer
		00.08%: neoforge:mixin
		00.00%: neoforge:simple_processors_default (marker)
		00.02%: neoforge.coremods:field_to_getter.net.minecraft.world.level.biome.biome
		00.02%: neoforge.coremods:field_to_getter.net.minecraft.world.level.block.flowerpotblock
		00.02%: neoforge.coremods:field_to_getter.net.minecraft.world.level.levelgen.structure.structure
		00.22%: neoforge.coremods:method_redirector
	Mod List: 
		[G][辅助][客户端][禁用模组检测]be_quiet_negotiator-1.0.3.jar |Be Quiet Negotiator           |be_quiet_negotiator           |1.0.2               |Manifest: 5722d7ecad18dcab147a69d498924aa24119774d1f5c603ba44adb5229c93019
		minecraft-client-patched-21.10.64.jar             |Minecraft                     |minecraft                     |1.21.10             |Manifest: 9d3893dd95849daffa7939d7a362df8825449a128b7541c53426f0724f75bb34
		neoforge-21.10.64-universal.jar                   |NeoForge                      |neoforge                      |21.10.64            |Manifest: 51dc4f8418cc0c067df2524bc220edef56097f475f60527d550992bed90a2b57
	Crash Report UUID: b5982480-2575-40f1-bf5f-4966798b090f
	FML: 10.0.32
	NeoForge: 21.10.64

[samuelh2005]

After running the game myself the full logs tell a more complete story.

latest.log

At some point NeoForge removed their CheckFeatureFlags class.

I done some more testing and this issue also affects any version greater or equal to 1.21.2.

Until I implement a proper solution I will mark the mod as incompatible to prevent invalid automated downloads.

[EthanPeng-2048]

I tried to delete CheckFeatureFlags to support 1.21.11, but it doesn't work.
Link: #8

[EthanPeng-2048]

fix it at branch 2.0-dev, I sent a pull request #10

[samuelh2005]

My manual changes to the 2.0 branch are done now, just need to figure out the multi-version publishing to Modrinth.

However 1.21.10 is still not supported. But we're closer now, the duplicate Cauldron bug was introduced in 1.21.7.

Now all what is left is to introduce a new 1.21.7 sub project.

[EthanPeng-2048]

My manual changes to the 2.0 branch are done now, just need to figure out the multi-version publishing to Modrinth.

However 1.21.10 is still not supported. But we're closer now, the duplicate Cauldron bug was introduced in 1.21.7.

Now all what is left is to introduce a new 1.21.7 sub project.

I fixed all the bugs with 1.21.7, please accept my pull request

[EthanPeng-2048]

@MC-Nirvana Hello, I fixed this in my forked version, please check https://github.com/EthanPeng-2048/BeQuietNegotiator/releases/tag/2.0.1