Hello. I have server configured on NeoForge with mods Apotheosis and Enchantments, Spawners, Attributes, Placebo, Patchuli
Everything worked great but Anvils missing... i can't do splitting magic...
Here is my mod list:

•   Name Version (Mod Id)
  

•   Apotheosis 8.3.6 (apotheosis)
  

•   Apothic Attributes 2.9.0 (apothic_attributes)
  

•   Apothic Enchanting 1.4.4 (apothic_enchanting)
  

•   Apothic Spawners 1.3.2 (apothic_spawners)
  

•   Minecraft 1.21.1 (minecraft)
  

•   NeoForge 21.1.193 (neoforge)
  

•   Patchouli 1.21-88-NEOFORGE (patchouli)
  

•   Placebo 9.9.0 (placebo)
  

I can't use /give @p apotheosis:infused_anvil or find it with JEI/creative menu

What can causes this behavior?

Anvil enchants were removed in 1.21

Anvil enchants were removed in 1.21

damn... i done lot of work to fix it but didn't find main explanation )
Tnx! Would it be separeted mod, or it removed forever?

It has been removed forever. The amount of hacks needed to support it was too high.