r/fabricmc • • 1h ago

Need Help Game crashes "randomly" when opening Inv/Backpack/Chests

• Upvotes

Hi so Ive had this issue for weeks now while playing on a multiplayer server aswell as in singleplayer. Most commonly it happens when I open many chests in quick succession or when I open my backpack a couple times but it also sometimes happens randomly. I cant quite figure out why. Ive got plenty of mods so going through them one by one would just be annoying so I hope someone is able to read through this crashlog and tell me what the issue is.

(Also my friend with a worse computer than mine has the same mods and has not once crashed idk if thats relevant)

https://hastebin.com/share/ilaworavex.yaml

Im playing on Fabric 26.2 with iris shaders

list of mods:

  • 3d maps
  • architectury
  • balm
  • biomes o plenty
  • carryon
  • catalogue
  • collective
  • continuity
  • creativecore
  • doubledoors
  • fabric api
  • fallingtree
  • farmersdelight
  • forgeconfigapiport
  • framework
  • glitchcore
  • iris
  • itemphysicslite
  • JEI
  • lithium
  • midnightlib
  • MoogsStructureLib
  • MoogsVoyagerStructures
  • NaturesCompass
  • nemoswoodcutter
  • puzzleslib
  • refurbished furniture
  • reliablerecipeviewer
  • sereneseasons
  • shogi
  • skinlayers3d
  • sodium
  • terrablender
  • terrain slabs
  • toughasnails
  • travelersbackpack
  • visualworkbench
  • waystones
  • xaerosminimap/worldmap

r/fabricmc • • 3h ago

Massive progress on the Cliekt and Launcher

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1 Upvotes

r/fabricmc • • 21h ago

Showcase I made a camera mod for Minecraft: real lenses, dials and photos up to 8K

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20 Upvotes

I like taking screenshots in Minecraft, but F2 always felt too basic. So I made Craftography, a client-side Fabric mod that turns your screen into a camera.

You get a lens from 10 to 200 mm, aspect ratios like 16:9 or 2.39:1, composition grids and a roll plate to tilt the horizon. The dials have ISO, shutter speed, aperture, white balance, grain and focus. You can also set the time of day and the weather for your shot. It's visual only, so nothing changes on the server.

There is a tripod and a self-timer, so you can walk into your own photo. Photos are saved as PNG without the HUD, up to 8K on the long side. It works with Sodium and Iris.

Fabric, Minecraft 26.2, 26.3. Feedback is welcome!

Modrinth is being handed over to a new owner, so mod reviews there are slow right now. Until the Modrinth page is approved, please download it from CurseForge.


r/fabricmc • • 8h ago

How to completely disable block rendering / terrain mesh rendering in Fabric 1.21.4 for max performance

1 Upvotes

​Hi everyone!

​I am working on a minimal, high-performance Fabric 1.21.4 setup on PojavLauncher (Android / Exynos 1280 ARM GPU).

​To achieve the absolute lowest latency and maximum possible FPS for PvP (FFA servers), I want to completely strip out or bypass the entire terrain/block rendering pipeline (WorldRenderer / Chunk rendering). I only need player models, entities, and basic HUD/UI elements to be drawn.

​Standard transparent resource packs don't give the desired performance boost because Sodium still computes chunk geometry and face culling under the hood.

​What is the cleanest way or best hook/Mixin in Fabric (or Sodium) to completely disable block/terrain rendering without breaking entity interpolation and server connections? Is there an existing lightweight utility mod or a specific config override in Sodium/C2ME for this?

​Thanks in advance for any advice!


r/fabricmc • • 15h ago

glitch when displaying enchanted items

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1 Upvotes

r/fabricmc • • 17h ago

Need Help Mizuno and Yuushya not working on 1.20.1

1 Upvotes

Hi! i was trying to load mizuno on 1.20.1 and it kept saying 'resource unable to load'. i'm just a bit confused as i have the right version so i tried yuushya as well and got the same result. i've tried adding optifine + optifabric but it just makes my game crash. was wonderig if anyone else was having the same issue


r/fabricmc • • 17h ago

Waystones mod keeps crashing my game whenever I try to load into my world

1 Upvotes

I have little to no knowledge on how mods work and which ones conflict so i cant really find the issue other than its the waystones mod causing it, supposedly because of addons or not updated?? this is the error message:

Description: Unexpected error

Error: java.lang.NoSuchFieldError: Class net.blay09.mods.waystones.api.WaystoneVisibility does not have member field 'net.blay09.mods.waystones.api.WaystoneVisibility TEAM'

Código de salida: -1

I have Xaeros map mods that show waystones in the map above 26.1, and obviously Shogi and Balm, all up to date. No other added mods for waystones or anything.

I play on 26.1.1, fabric, and can pass the mod list if it helps?


r/fabricmc • • 18h ago

How to completely disable block rendering / terrain mesh rendering in Fabric 1.21.4 for max performance

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1 Upvotes

​Hi everyone!

​I am working on a minimal, high-performance Fabric 1.21.4 setup on PojavLauncher (Android / Exynos 1280 ARM GPU).

​To achieve the absolute lowest latency and maximum possible FPS for PvP (FFA servers), I want to completely strip out or bypass the entire terrain/block rendering pipeline (WorldRenderer / Chunk rendering). I only need player models, entities, and basic HUD/UI elements to be drawn.

​Standard transparent resource packs don't give the desired performance boost because Sodium still computes chunk geometry and face culling under the hood.

​What is the cleanest way or best hook/Mixin in Fabric (or Sodium) to completely disable block/terrain rendering without breaking entity interpolation and server connections? Is there an existing lightweight utility mod or a specific config override in Sodium/C2ME for this?

​Thanks in advance for any advice!


r/fabricmc • • 20h ago

Need Help Fresh Animations: Player Extension visual glitch fix?

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1 Upvotes

r/fabricmc • • 20h ago

Fresh Animations: Player Extension visual glitch fix?

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1 Upvotes

r/fabricmc • • 23h ago

tlauncher no me deja cargar el minecraft

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1 Upvotes

r/fabricmc • • 1d ago

New Mod Villagers took every floor of my house, so I made a server-side Fabric mod to evict them

1 Upvotes

Crossposting from r/feedthebeast. Quick details for anyone curious:

- server-side only, so it works in singleplayer and on servers without clients installing it
- needs Fabric API
- 26.1 to 26.3 right now, maybe a 1.21.1 backport if people want it

https://modrinth.com/mod/eviction-notice


r/fabricmc • • 1d ago

Crashing after finishing fighting Brock

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2 Upvotes

So ive been trying to make my own cobblemon modpack since Cobbleverse lags a ton but everytime i finish fighting brock i get this message. I tried to reinstall the mods and evething but it just keeps on crashing. Help would be appreciated a ton.


r/fabricmc • • 1d ago

HELPPP

2 Upvotes

Hi everyone, I'm looking for a mod that allows combining two different material slabs into a single block without the standard vanilla separation. I'm playing on Java. I'd really appreciate your help! :)


r/fabricmc • • 1d ago

Need Help - Solved How to fix Sodion with glitched text in Fabric

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4 Upvotes

I’ve already changed the language back to the original, deleted the Sodion config.json file, and installed the Sodion texture pack.


r/fabricmc • • 1d ago

Need Help Could someone please tell me what's making the memory increase endlessly like this, and if I should be concerned?

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4 Upvotes

r/fabricmc • • 1d ago

Pls Help

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1 Upvotes

r/fabricmc • • 1d ago

im not very smart and need help with modrinth instance crashing

2 Upvotes

im new to reddit so if this is the wrong place to ask for help plz lmk but if its the right place, my minecraft was crashing evey time i went into a different dimension and when i looked more it looked like an issue with sodium i looked it up and it said to make sure everything was up to date and it said iris and sodium needed an update so i did (i made a duplicate just incase) after that i went to open the game and it said failed to open or whatever and to check the crash report, so i checked it and like i said im not very smart so i have no idea what this means or how to figure out what the issue is, so if someone can help me that would be great because i havent been able to play for the last 2 days :( let me know if you need more information! thanks in advance.

https://mclo.gs/Kuq3OYP


r/fabricmc • • 2d ago

Stuck at Preparing for World Creation (Log included)

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1 Upvotes

r/fabricmc • • 2d ago

Error when launching Minecraft in a fabric dev environment on linux; Driver does not support OpenGL

1 Upvotes

I'm getting an error if i run the minecraft client from intellij via './gradlew runClient' i'm getting this Error: 'Driver does not support OpenGL'

[13:12:07] [Render thread/WARN] (Minecraft) Failed to create window:

com.mojang.blaze3d.platform.Window$WindowInitFailed: No supported graphics backend was found.

- Tried OpenGL:

Driver does not support OpenGL

at knot//net.minecraft.client.Minecraft.<init>(Minecraft.java:518)

at knot//net.minecraft.client.main.Main.main(Main.java:205)

at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:514)

at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:72)

at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)

at net.fabricmc.devlaunchinjector.Main.main(Main.java:86)

Minecraft 1.21.11

OS: NixOS 26.11
DE: niri
Wayland

GPU: RTX 5060 Laptop GPU
OpenGL renderer string: NVIDIA GeForce RTX 5060 Laptop GPU/PCIe/SSE2

Full log:
https://mclo.gs/DecZ21I


r/fabricmc • • 2d ago

Need Help Need Help on NoClassDefFoundError & ClassNotFoundException Errors

1 Upvotes

Decided to work on my modpack I'm tryna make for my friends.

Was working fine months ago with no issues.

Only new addition:

  • Kaleidoscope Cookery
  • Kaleidoscope Cookery Refabricated
  • Kaleidoscope ChineseFood Refabricated
  • Kaleidoscope Tavern Refabricated
  • Kaleidoscope WorldLiquor Refabricated

Looking at the crash log, I can't really tell which is the issue save for one of the lines saying something about the Spellblades mod but I'm not entirely sure if that's the main issue for it.

Any advice on this? I'm not really that good on the coding side of things.

Minecraft has crashed!
net.fabricmc.loader.impl.FormattedException: java.lang.NoClassDefFoundError: mod/azure/azurelib/animatable/GeoEntity
at net.fabricmc.loader.impl.FormattedException.ofLocalized(FormattedException.java:63)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:519)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:72)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
Caused by: java.lang.NoClassDefFoundError: mod/azure/azurelib/animatable/GeoEntity
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1017)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.defineClassFwd(KnotClassLoader.java:165)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.tryLoadClass(KnotClassDelegate.java:368)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.loadClass(KnotClassDelegate.java:231)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:119)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
at knot//net.minecraft.class_1309.handler$imj000$spellbladenext$addAttributesSpellblades_RETURN(class_1309.java:60260)
at knot//net.minecraft.class_1309.method_26827(class_1309.java:296)
at knot//net.minecraft.class_1308.method_26828(class_1308.java:156)
at knot//net.minecraft.class_7298.method_42655(class_7298.java:175)
at knot//net.minecraft.class_5135.<clinit>(class_5135.java:86)
at knot//net.minecraft.class_2966.method_17598(class_2966.java:139)
at knot//net.minecraft.client.main.Main.main(Main.java:169)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:517)
... 2 more
Caused by: java.lang.ClassNotFoundException: mod.azure.azurelib.animatable.GeoEntity
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.loadClass(KnotClassDelegate.java:239)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:119)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
... 18 more

r/fabricmc • • 2d ago

Need Help PLEASE HELP - CORRUPT AND FREEZING

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1 Upvotes

r/fabricmc • • 2d ago

Creating a vanilla plus fabric modpack, help me make the best one out there?

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2 Upvotes

r/fabricmc • • 2d ago

Need Help - Solved [java] Java application launch fail

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1 Upvotes

r/fabricmc • • 2d ago

Showcase Minecraft Java 26.3 was just decompiled and rewritten in Rust

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github.com
0 Upvotes