ModsFinder

NaNFix

by Yuqi154

NaNFix removes entities whose rotation has been set to NaN, a state that can otherwise flood the server log with errors.

FabricNeoForgeServer-side onlyMIT LicenseOpen source1.21 – 1.21.4

What it does

Setting an entity's rotation to NaN through a command can leave it in a broken state that keeps producing errors. NaNFix finds and deletes those entities so the server log stays readable and the save is not filled with unusable data. Only the server needs the mod, so players join without installing anything.

The mod is open source under the MIT License and is published for Fabric and NeoForge, with builds covering 1.21 – 1.21.4.

Key features

  1. Removes NaN entities

    Entities whose rotation is NaN are detected and deleted, clearing the faulty entries from the world.

  2. Keeps logs small

    Stopping repeated errors from broken entities prevents very large log files on busy servers.

  3. Cleans up saves

    Removing unusable entities keeps world saves free of entries that no longer work.

Compatibility

Latest build for each game version and loader.

1.21.41.0.01.0.0
1.21.31.0.01.0.0
1.21.21.0.01.0.0
1.21.11.0.01.0.0
1.211.0.01.0.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Questions

Does NaNFix need to be installed on player clients?

No. It runs on the server alone, so players need nothing extra to join.

In the catalog

NaNFix is one of 7,555 Cursed mods on ModsFinder, and one of 4,235 Cursed mods for Fabric. 17,979 mods support Minecraft 1.21.4.

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What the author says

This mod will remove the NaN entity to avoid huge log files. When a entity was set to NaN rotation, the mod will remove the errored entity.
Yuqi154, on the Modrinth page

Official listing

Owner
Yuqi154
Published
2025-03-06
Updated on Modrinth
2025-03-06
Facts verified
2026-10-15

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