ModsFinder

Datapack Error Viewer

by ThePotatoArchivist

Datapack Error Viewer shows datapack loading errors in a game screen, so players can read them without opening the log.

FabricClient and serverMIT LicenseOpen source1.21 – 26.3

What it does

When a datapack fails to load, the error appears on a screen in the game UI instead of only in the log file. Datapack Error Viewer only applies to datapack files that prevent a world from loading, such as those affecting vanilla enchantments or paintings. Files like tags and loot tables fail softly and do not stop world loading, so they show no error screen. The mod runs on Fabric for game versions 1.21 – 26.3, with files for 26.3 dated 2026-09-15, and it is open source under the MIT License. It runs on client and server, and it has no connection to multiplayer servers.

Key features

  1. Error screen in the game UI

    Datapack loading errors are displayed in a screen inside the game.

  2. Blocking errors only

    The screen covers datapack files that prevent a world from loading, such as enchantment and painting data.

  3. Soft failures not shown

    Tags and loot tables that fail softly do not stop loading, so no error screen appears for them.

Compatibility

Latest build for each game version and loader.

26.31.0.0+mc26.3
26.21.0.0+mc26.1
26.1.21.0.0+mc26.1
26.1.11.0.0+mc26.1
26.11.0.0+mc26.1
1.21.111.0.0+mc1.21.11
1.21.11.0.0+mc1.21.1
1.211.0.0+mc1.21.1
ReleaseBetaAlphaNot available

This mod also publishes snapshot builds. Snapshots are not shown in the matrix.

Questions

Does Datapack Error Viewer need to be installed on the server?

A server running it needs every connecting player to have it too.

Which errors does the screen show?

Only datapack files that prevent a world from loading, such as enchantments and paintings. Soft failures like tags and loot tables do not produce a screen.

In the catalog

Datapack Error Viewer is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 8,071 mods support Minecraft 26.3.

Management mods8,016Fabric modsMods for 26.38,071

More from ThePotatoArchivist

All projects
Tool Trims Mod1.20 – 26.3Kitchen Projectiles1.20.1 – 26.3OmniCrossbow1.20.1 – 26.3Classic Farlands1.21 – 26.3Penchant1.21 – 26.3Bundle Backport-ish1.20.1 – 1.21.1

Similar mods

Cherished Worlds1.12.2 – 26.3Default Options1.18 – 26.3Axiom1.20 – 26.3Resourcify1.8.9 – 26.3Rebind Narrator1.16.1 – 26.1.2Paxi1.19.2 – 26.1.2

What the author says

This mod displays datapack loading errors in the game UI so that you don't have to open the log to see the error. 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…
ThePotatoArchivist, on the Modrinth page

Official listing

Owner
ThePotatoArchivist
Published
2025-12-21
Updated on Modrinth
2026-09-15
Facts verified
2026-10-15

Tags

ManagementUtility
Open on ModrinthCompare