How do I install Cyanide Mod (1.21.1, 1.20.1) – Informative Error Messages?

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. In MC Java Mods, or directly above on this page.

What Minecraft version does Cyanide Mod (1.21.1, 1.20.1) – Informative Error Messages work with?

The listing gives Minecraft 1.21.1, 1.20.1. This is the version stated by the author or source site, not something we verified ourselves.

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Cyanide Mod (1.21.1, 1.20.1) – Informative Error Messages

by vnblidion

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Cyanide Mod (1.21.1, 1.20.1) – Informative Error Messages — screenshot 1

Cyanide Mod (1.21.1, 1.20.1) – Informative Error Messages — screenshot 2

Cyanide Mod (1.21.1, 1.20.1) – Informative Error Messages — screenshot 3

Cyanide Mod (1.21.1, 1.20.1) – Informative Error Messages — screenshot 4

Cyanide Mod (1.21.1, 1.20.1) – Informative Error Messages — screenshot 5

Cyanide Mod (1.21.1, 1.20.1) – Informative Error Messages — screenshot 6

Cyanide Mod (1.21.1, 1.20.1) – Informative Error Messages — screenshot 7

Cyanide Mod (1.21.1, 1.20.1) – Informative Error Messages — screenshot 8

Cyanide Mod is a mod that improves worldgen datapack errors by replacing confusing stack traces with detailed error messages. It pinpoints the exact file, datapack, and location of the error, allowing datapack creators to quickly fix common issues like negative values, invalid JSON, feature cycles, or missing files.

Features:

Show the file name + datapack that caused the error, with the exact location (row, column).
Value error: specify the wrong value and the requirement (e.g. “Value provider too low (must be >= 0), got -1”).
Missing file error: list all files that reference the missing feature.
JSON error: quote the code around the syntax error.
Feature cycle error: draw detailed loops between biomes and features.

Screenshots:

Cyanide Mod Download Links

For Minecraft 1.21.1, 1.21

NeoForge version: Download from Server 1 – Download from Server 2

Fabric version: Download from Server 1 – Download from Server 2

For Minecraft 1.20.1

Forge/NeoForge version: Download from Server 1 – Download from Server 2

Fabric version: Download from Server 1 – Download from Server 2

For Minecraft 1.19.2

Forge version: Download from Server 1 – Download from Server 2

For Minecraft 1.18.2

Forge version: Download from Server 1 – Download from Server 2

For Minecraft 1.17.1

Forge version: Download from Server 1 – Download from Server 2

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 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: In MC Java Mods, or directly above on this page.

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

Downloads as 176644.mcaddon
Download size: 48 KB
Download link checked 25 Jul 2026 — working
Mirrored on our own servers — the download does not depend on the original host

These come from our own check of the pack file, not from the source page.

Explore more

All Mods for Java All Minecraft Java mods Java mods for 1.21 Java mods for 1.20