DarkUnbug NaN fix
This will resolve player data issues where HP and Absorption get stuck with NaN values.
About this Mod
This mod was created for the DarkRPG modpack but can be used on its own. It is a fork of the Allow Editing Player Data mod and now includes the trigger function to allow players to resolve their broken HP and Absorption NaN status without asking server admins.
This issue happens in large modpack servers where the HP and Absorption entries get broken with a set NaN status and the player is forever in a death glitch state.
To use, simply type the command /trigger darkunbug which will then fix and reset your HP and Absorption
Example of player stuck in death glitch state on DarkRPG Fabric modpack using Hexblade origin
Use the command
It will kill your character and reset your stats.
Available Versions
How to Install DarkUnbug NaN fix 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 (1.20.1).
Install Mod
Open the mod browser in the dashboard and search for "DarkUnbug NaN fix". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
DarkUnbug NaN fix 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 (1.20.1). You can switch loaders with one click in the panel.
Is DarkUnbug NaN fix compatible with fabric?
DarkUnbug NaN fix officially supports fabric for Minecraft 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with DarkUnbug NaN fix – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if DarkUnbug NaN fix 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.
Rent Modded Server
Install DarkUnbug NaN fix with just one click on your server.