ViaVersion Bug Fix

BlockStateParticleEffect Crash Prevention in ViaVersion 1.21.10 ~ 1.21.11.

2.0K Downloads

fabricutility

Rent Server with this Mod

About this Mod

ViaVersion Bug Fix (Crash Resolver)

Prevent conflicts between ViaVersion's packet forwarding capabilities and Fabric API's BlockStateParticleEffect.

Maybe Resolve the issue.

Version 1.0 requires ViaVersion and Fabric API, but this mod is not included. Version 1.1 and later do not have any mods that depend.

This mode was created and tested in a 1.21.10 or 1.21.11 host environment, and compatibility with other versions has not been verified.

The mod must be applied to the fabric server side.

※ Starting with version 1.1, all particles are displayed normally (including landing particles).

Available Versions

1.1+1.21.11release

MC 1.21.11fabric

February 18, 2026

ViaVersion-Bug-Fix-1.0+1.21.10release

MC 1.21.10fabric

December 14, 2025

How to Install ViaVersion Bug 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 (1.21.11).

Install Mod

Open the mod browser in the dashboard and search for "ViaVersion Bug Fix". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11, 1.21.10

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

ViaVersion Bug 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 (1.21.11). You can switch loaders with one click in the panel.

Is ViaVersion Bug Fix compatible with fabric?

ViaVersion Bug Fix officially supports fabric for Minecraft 1.21.11, 1.21.10. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with ViaVersion Bug Fix – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if ViaVersion Bug 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.