Odd netty mod incompatabilities causing 'Connection Refused'

[BLovegrove]

Describe the bug
Mod is causing multiple errors seemingly related to Netty when added to my server pack. Prevents people from joining the server. The errors themselves all seem to stem from other mods but only appear when the AutoModpack mod is added so I would assume its the real cause.

To Reproduce
Steps to reproduce the behavior:

1. With PolyMC/MultiMC: Add instance and use url provided for non-launcher method.
   Without PolyMC/MultiMC: Download the modpack (available here) Sorry no ssl yet but its just an asset dump so should be fine
2. Run modpack
3. Attempt to join my server at 158.140.235.250:25566
4. Edit: Let me know if you end up wanting to jump on my server for testing so I can reset the mods back. Removed AutoModpack for the time being so people can still sue it.

Expected behavior
Connects just fine. As it does when I remove AutoModpack

Screenshots

AutoModpack and Minecraft Version you are using (please complete the following information):
AutoModpack version 2.4.1 for MC 1.18.2

Additional context
Other problems have popped up before too including a weird error the google hivemind doesn't even know about:
"java.lang.IllegalArgumentException: Fluid may not be flowing. " - not a single related result I could find.

Client & Server log
Log file

[BLovegrove]

Any updates on this? Or anything I can do to help in the meantime? Not trying to rush, just curious :')

[Skidamek]

Any updates on this? Or anything I can do to help in the meantime? Not trying to rush, just curious :')

Nothing yet

[otowm]

same problem with 1.19.2

[Skidamek]

Fixed in 3.0.0 https://github.com/Skidamek/AutoModpack/releases/tag/v3.0.0-beta