MC 1.20.1
Forge 47.2.4
Mod versions:
ApothicAttributes-1.20.1-1.2.0.jar
Placebo-1.20.1-8.5.6.jar
Apotheosis-1.20.1-7.0.5.jar

Game crashes on startup, resolved by reverting updates to Placebo and AttributesLib.

NoClassDefFoundError: dev/shadowsoffire/placebo/reload/TypeKeyed

crash-2023-11-16_21.13.18-client.txt

This is caused by using the wrong placebo version for that version of AA.