Missing dependencies

A library mod is missing (Architectury, Cloth Config, Curios, Placebo…)

What the log looks like

java\.lang\.noclassdeffounderror: *(?:dev/architectury|me/shedaniel/clothconfig|top/theillusivec4/curios|shadows/placebo|com/llamalad7/mixinextras|dev/emi/emi|mezz/jei|io/github/fabricators_of_create)
noclassdeffounderror[^\n]{0,80}(?:architectury|clothconfig|curios|placebo|mixinextras)

How to fix it

  1. The missing class path names the library: dev/architectury → Architectury API
  2. Install that library for your loader and Minecraft version
  3. Library mods are per-loader: the Fabric build will not work on Forge
SeverityStops the game
CategoryMissing dependencies

Check your own log

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