WeCuiFix

Fix WorldEdit work with WorldEditCUI on 1.20.5-1.21.4

by
24.1K Downloads
fabric
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About this Mod

Github: https://github.com/Lumine1909/WeCuiFix

WeCuiFix (Fabric Mod)

A fabric mod that fix WorldEdit work with WorldEditCUI on 1.20.5 - 1.21.4

Since 1.21.5, WorldEdit and WorldEditCUI are compatible with each other, this mod is unnecessary

Please install this mod with both WorldEdit and WorldEditCUI


Update for the newer WorldEditCUI

From this commit, WECUI has Explicitly mark an incompatibility with WorldEdit. In order to fix that, you have to modify WECUI's config file manually to bypass the fabric's compatibility check with this followed step:

Options 1. Modify WECUI Jar:

  1. Open WECUI Jar from what ever unzip software you want.

image

  1. Open fabric.mod.json, remove all the "breaks" part, and save it.

image

Option 2. Add dependency override file in minecraft config:

  1. Open .minecraft/config (If you enabled version isolation, open .minecraft/version/%YOUR_VERSION%/config instead.

image

  1. In this folder, create a new file named fabric_loader_dependencies.json and input:
{
  "version": 1,
  "overrides": {
    "worldeditcui": {
      "-breaks": {
        "worldedit": "IGNORED"
      }
    }
  }
}
  1. Save the file. (Or you can download the file from here)

After finish those step, you could be able to use both of the mod together.


License

Copyright (C) 2025, Lumine1909;

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this program. If not, see https://www.gnu.org/licenses/.

Available Versions

WeCuiFix Finalrelease
MC 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4fabric
July 26, 2025
WeCuiFix 1.2.0release
MC 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4fabric
May 7, 2025
WeCuiFix 1.1.0release
MC 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4fabric
May 6, 2025
WeCuiFix 1.0.1release
MC 1.21.4fabric
April 27, 2025

How to Install WeCuiFix on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.4).

3

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.4, 1.21.3, 1.21.2 (+4 more)

Server-side

Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

WeCuiFix 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 WeCuiFix compatible with fabric?

WeCuiFix officially supports fabric for Minecraft 1.21.4, 1.21.3, 1.21.2. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with WeCuiFix – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if WeCuiFix 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 WeCuiFix with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
GNU General Public License v3.0 only
Server-side
Unsupported

Supported Versions

1.21.41.21.31.21.21.21.11.211.20.61.20.5