Datapack Error Viewer

See datapack loading errors in GUI

by ThePotatoArchivistManagement Utility

Fabric

Loaders: Fabric
Downloads on Modrinth: 1.6K
Followers on Modrinth: 10
versions: 4
Updated: September 15, 2026Sep 15
Published: in 2025

Add to favorites Follow updatesFollow

Datapack errors displayed in GUI · swipe

At a glance

Runs on Fabric

For Minecraft 1.21–1.21.1, 1.21.11–26.3

Needed in the game and on the server

Latest version — 1.0.0+mc26.3 from September 15, 2026

License MIT — free

Where it's needed

In gamerequiredOn serverrequired

Needed both in the game and on the server

Game versions1.21–1.21.1, 1.21.11–26.3

This mod displays datapack loading errors in the game UI so that you don't have to open the log to see the error.

Minecraft menu screen displaying datapack errors

Note this only applies to datapack files that prevent world load in vanilla, such as enchantments and painting variants. Files like tags and loot tables fail soft and don't prevent the world from loading, thus no screen is shown. This may be addressed in future releases.

Does nothing when connecting to multiplayer servers.

FAQ

How to install Datapack Error Viewer?

Install Fabric for your Minecraft version, download Datapack Error Viewer for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does Datapack Error Viewer support?

Datapack Error Viewer has builds for Minecraft 1.21–1.21.1, 1.21.11–26.3.

Is Datapack Error Viewer needed on the server?

Needed in the game and on the server

License and source

MIT Licensefree to use and share with credit to the author

Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders