About this Mod
When the minecraft summon a NaN entity.
The server logs like this:
This mod will remove the NaN entity to avoid huge log files.
How the mod works:
When a entity was set to NaN rotation, the mod will remove the errored entity.
Attention: This may result in the deletion of some of the entities in your save.
Available Versions
How to Install NaNFix on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.4).
Install Mod
Open the mod browser in the dashboard and search for "NaNFix". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.4, 1.21.3, 1.21.2 (+2 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
NaNFix server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.4). You can switch loaders with one click in the panel.
Is NaNFix compatible with fabric and neoforge?
NaNFix officially supports fabric, neoforge for Minecraft 1.21.4, 1.21.3, 1.21.2. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with NaNFix – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if NaNFix consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Install NaNFix with just one click on your server.