CurseForge · Minecraft mod
datapackloaderrorfix
A comprehensive Minecraft world repair utility that fixes common issues caused by removed mods and datapacks
Quick answer
Which datapackloaderrorfix release matches 1.21.8 NeoForge?
datapackloaderrorfix-neoforge-1.21.8-2.0.0.jar targets 1.21.8, 1.21.9-snapshot, 1.21.9 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is datapackloaderrorfix required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does datapackloaderrorfix-neoforge-1.21.8-2.0.0.jar need?
datapackloaderrorfix-neoforge-1.21.8-2.0.0.jar on 1.21.8 NeoForge. Every mod below is checked against that same setup.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add datapackloaderrorfix without breaking your instance.
Built for datapackloaderrorfix-neoforge-1.21.8-2.0.0.jar on 1.21.8 NeoForge. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use datapackloaderrorfix-neoforge-1.21.8-2.0.0.jar. It targets 1.21.8, 1.21.9-snapshot, 1.21.9 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside datapackloaderrorfix-neoforge-1.21.8-2.0.0.jar. It opens that exact file at the source.
About this project
What does datapackloaderrorfix add?
Datapack Load Error Fix is a lightweight utility mod designed to help players continue using their Minecraft worlds after removing mods.
When mods that add custom dimensions, entities, or blocks are uninstalled, they often leave behind data references that can cause world loading errors or in-game crashes.
This mod automatically detects and cleans up these invalid references, allowing your world to load normally again.
This mod provides a permanent fix; you can repair the save file directly in the editor, and then delete this mod, but you may still keep it for future needs;
Currently, this mod only supports repairing on the client side. To repair a server save file, import it to the client and load the save once;
This mod is not a universal solution—it only fixes the data pack error that prevents entering a save caused by removing mods with custom dimensions. It cannot fix data pack errors caused by other reasons!
Project description from CurseForge.
Pick your setup
datapackloaderrorfix by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.11
2 loader builds1.21.10
2 loader builds1.21.9-snapshot
1 loader build1.21.9
2 loader builds1.21.8
2 loader builds1.21.7
2 loader builds1.21.6-snapshot
2 loader builds1.21.6
2 loader builds1.21.5
1 loader build1.21.4-Snapshot
2 loader builds1.21.4
2 loader buildsShowing the newest 12 of 33 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
datapackloaderrorfix versions and loaders
datapackloaderrorfix-neoforge-1.21.8-2.0.0.jar
12 Feb 2026
Looking for an older file? The official CurseForge project page is in Resources.