Running Citadel on a modded server with ONLY Iceandfire-2.1.4-1.16.4.
Console indicates that some aspects of Citadel may be broken, or an intended override?
Is this a bug? Or okay to ignore? Will it affect gameplay?

"No data fixer registered for.... (almost every Ice and Fire part)."

Entity IDs also appear to be conflicting? Is this intended?
[12.12 23:08:25] [Server] [main/WARN] [minecraft/EntityDataManager]: defineId called for: class com.github.alexthe666.iceandfire.entity.EntityHippogryph from class com.github.alexthe666.iceandfire.entity.EntityPixie
[12.12 23:08:25] [Server] [main/WARN] [minecraft/EntityDataManager]: defineId called for: class com.github.alexthe666.iceandfire.entity.EntityDreadThrall from class com.github.alexthe666.iceandfire.entity.EntityDreadKnight

Server Log.txt

Also experiencing this issue. Server take a long time to start, hanging for a while before spamming

Potentially Dangerous alternative prefix \citadel` for name `fancy_item`, expected `minecraft`. This could be a intended override, but in most cases indicates a broken mod.`

The whole machine is working so hard at this process to the point that all of the other servers crash for 60s ticks.