Search the Forums BEFORE making a new post.

Modder Support

This is the support section for those modding with Forge. Help with modding goes in here, however, please keep in mind that this is not a Java school. You are expected to have basic knowledge of Java before posting here.

Followers

Documentation

15556579 visits to this link
ForgeGradle
ForgeGradle

Help and support setting up your IDE and building mods with Gradle.
- 5.5k posts
can't downloading net.minecraftforge:forge:1.20.1-47.4.11:userdev

Stal_Maten, November 27, 2025Nov 27

Start new topic

Followers

IPS spam blocked by CleanTalk.

Announcements

Mod loading error has occured

Hi, when i start playing cobbleverse in the 1.21.1 version, the game crashed:
link of the crash
I dont know what can i do, please help

By davicidio_ · Posted Yesterday at 05:34 AM1 day
idk what should i do

These forums are for MinecraftForge, Neoforge has it's own support site/discord, you would be better served looking for help there.

By Ugdhar · Tuesday at 08:02 PM3 days
idk what should i do

We detected an error in stderr_stream.log about duplicated packages:
Modules mixinextras.neoforge and MixinExtras export package com.llamalad7.mixinextras.sugar.ref to module crabbers_delight_expand

This error means mods are exporting packages with the same name to the game, while only one can be loaded.
Basically, this either means the same mod is present twice, or there is a dependency conflict.

You have 2 ways to fix this crash:

1) [RECOMMENDED SOLUTION] Keep only one of the mods listed below,
and report the issue to both mod authors. They should relocate it or use jarInJar for their dependencies.

2) [TEMPORARY FIX] This is not recommended: it sometimes works, sometimes doesn't, and can cause unexpected issues.
Open the mod as an archive and delete the 'com.llamalad7.mixinextras.sugar.ref' folder in all mods listed below except one.

Mods containing the mentioned package:
aether-1.20.1-1.5.2-neoforge.jar!/META-INF/jarjar/mixinextras-forge-0.2.0-beta.9.jar!/META-INF/jars/MixinExtras-0.2.0-beta.9.jar
aether_protect_your_moa-1.20.1-1.0.0-neoforge.jar!/META-INF/jarjar/mixinextras-forge-0.2.0-beta.9.jar!/META-INF/jars/MixinExtras-0.2.0-beta.9.jar
BadOptimizations-2.4.1-1.20.1.jar!/META-INF/jars/fabric-mixinextras-fabric-0.2.2.jar
carryon-forge-1.20.1-2.1.2.7.jar!/META-INF/jarjar/mixinextras-forge-0.2.0-beta.6.jar!/META-INF/jars/MixinExtras-0.2.0-beta.6.jar
celestial_core-1.5.6.jar!/META-INF/jarjar/mixinextras-forge-0.2.0-beta.8.jar!/META-INF/jars/MixinExtras-0.2.0-beta.8.jar
enhanced_enchanting-1.2.2.2-forge-1.20.1.jar!/META-INF/jarjar/mixinextras-neoforge-0.5.0.jar
twilightdelight-2.0.17.jar!/META-INF/jarjar/mixinextras-forge-0.2.0-beta.8.jar!/META-INF/jars/MixinExtras-0.2.0-beta.8.jar
visuality-forge-2.0.2.jar!/META-INF/jarjar/mixinextras-forge-0.2.0-beta.6.jar!/META-INF/jars/MixinExtras-0.2.0-beta.6.jar

By sithnane · Posted Tuesday at 05:38 PM3 days
Caused by: java.lang.IllegalArgumentException: Unable to find model file:

Yes, the same problem is exactly the same, I did everything right, I was tired of using chatgpt, I was already tired of checking all the options, the paths definitely don't match, and the code itself just doesn't see this file, I tried to check the logs, and everything is called and working, but it's not visible. Also version 1.21.5.

Here is a piece of code:
@Override public ResourceLocation getModelResource(GeoRenderState state) { return ResourceLocation.fromNamespaceAndPath( LiskaMod.MODID, "geo/liska" ); }
I tried different ways of writing paths, but more than one did not help.
Here is my path to the file that cannot be found: "src\main\resources\assets\liskamod\geo\liska.geo.json"
And here's the damn mistake itself: Caused by: java.lang.IllegalArgumentException: Unable to find model file: liskamod:geo/liska

If anyone knows what the error is, please tell me! I will be very grateful.

By Beralva · Posted Monday at 11:28 PM4 days
Command based motion is horrendously bugged (forge 1.16.5)

To Replicate:
use "summon minecraft:snowball ~1 ~ ~ {Motion:[1.0d,1.0d,0.0d]}" in a command block followed by "execute as @e[type=minecraft:snowball] run data modify entity @s Motion[1] set value 0.5d" even the slow speeds have issues.

By sethfurno · Monday at 06:57 PM4 days

EditorMillie

Sign In

Subforums

47619 topics in this forum

Important Information

Configure browser push notifications

Chrome (Android)

Chrome (Desktop)

Safari (iOS 16.4+)

Safari (macOS)

Edge (Android)

Edge (Desktop)

Firefox (Android)

Firefox (Desktop)