Hello,
The error:
[Render thread/ERROR]: No key pattern in MapLike[{}]; No key material in MapLike[{}]
is spammed seemingly every tick in the console clogging it, this happens when the Armor model is rendered or the item in the inventory

But i seemingly can only replicate it on a server, in solo it does not happen for me, a friend told me otherwise it spams in solo too

To replicate:

• Wear or display the item "Enderite Elytra Chestplate"
• Check Logs

Fabric 1.20.1
Mod Version 1.5.1

Update: Managed to find where the issue stemmed from, there was an empty Trim in the tags of specific items,
Either deleting this entry or trimming the item with a smithing template fixes the issue
This entry appears when the Chestplate is combined with Elytras in the Crafting table but not with the same item obtained from the creative Inventory, this is why I couldn't previously reproduce it in singleplayer