ImmersivePortals for Fabric 1.21.1 is not working.

[Konpaku-LVX]

I have tried that...

• I am using the latest Arclight build

• I have read the FAQ and Troubleshooting, they didn't solve my issue

• I have searched existing Issues and found no duplicates

• The mods and/or plugins I use support my Minecraft version

• I have installed all required dependencies for the mods and/or plugins

• I have updated all mods and/or plugins to their latest versions

• This issue cannot be reproduced on a Spigot server
  (Mod-related issues are considered non-reproducible on Spigot)

• This issue cannot be reproduced on the Mod Loader server (Forge/NeoForge/Fabric)
  (Plugin-related issues are considered non-reproducible on mod loaders)

Minecraft Version

1.21.1

Arclight Version

1.0.2-SNAPSHOT-0769551

OS Version

Linux

Java Version

openjdk version "21.0.8" 2025-07-15
OpenJDK Runtime Environment (build 21.0.8+9-void-r1)
OpenJDK 64-Bit Server VM (build 21.0.8+9-void-r1, mixed mode, sharing)

Related Mods and/or Plugins (Name & Version)

Mods:
Immersive Portals
Arclight Itself

Issue Description

when you install Immersive Portals and start the server, it eventually halts the server due to some conflict about rewriting entities.

Steps to Reproduce

1. install Immersive Portals on latest Arclight
2. try to start server
3. it will not start server. halts after a while.

Server Logs

latest.log

The Server Pack for Reproduce

No response