Running a custom modpack in 1.21.1

NeoForge 21.1.132
Apotheosis-1.21.1-8.2.1
ApothicAttributes-1.21.1-2.7.0
ApothicEnchanting-1.21.1-1.3.2
ApothicSpawners-1.21.1-1.2.1

Mod list is extensive (I know I know) but will provide if requested.

Only began to happen after the update 5 days ago. I am in the same chunks on the server, so thought maybe a change to the gems could have messed with pregenerated loot from nearby, but /apoth gem fromPreset (any) DOES still provide an "errored gem with no bonus".

/placebo is as follows

{
"id": "apotheosis:gem",
"count": 1,
"components": {
"apotheosis:gem": "apotheosis:core/solar",
"apotheosis:purity": "cracked"
}
}

Applying one of these gems to a slot DOES provide its bonus (as far as I can tell) and armor with attributes (like "blessed") do not state their bonus to health, but still do provide it.

That sounds like you have something in your instance royally screwing with things. I don't have any ability to debug it, you will need to do a binary search to figure out what the issue is.

AAA Particles breaks Apotheosis' attribute display system entirely, but does not crash.

1.21.1 NeoForge 21.1.132

Modlist:

AAAParticles 1.4.9
Placebo 9.7.0
Apothic Enchanting 1.3.2
Apothic Spawners 1.2.1
Apothic Attributes 2.7.0
Apotheosis 8.2.1

Issue opened on their repository as well.