ModsJava
Data Reload
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
A mod that displays errors found while reloading server datapacks in chat, made for fabric loader 1.17.1.
Meant to be used while developing datapacks.
When used on the client:
- Adds the debug keybind F3+Y, which sends a /reload command to the server.
- Displays datapack load errors in chat when playing on singeplayer.
When used on a server:
- Displays datapack load errors for every opped player, even if they don't have the mod installed.
Supports:
- Function errors
- JSON parse errors
- Loot table errors
- Item modifier errors
- Recipe errors
- Invalid path errors
- Advancement errors
- Tag errors
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1, 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as datareload-1.7.jar — drop this file into the mods folder
- Download size: 24 KB
- Download link checked 24 Sept 2026 — working
These come from our own check of the pack file, not from the source page.