Mod Not Loading

Your own mods: why one does not show up or stops the game, and how to fix it.

Mods
  1. Right version and loader. It must be built for Fabric 1.21.11. Forge or NeoForge mods and mods for other versions do not load.
  2. Switched on? On the Profiles page, check its switch. A mod you turned off stays in the folder but is not loaded.
  3. Needs another mod? Most Fabric mods need Fabric API, which the pack already includes. Others need their own library; check the mod's Modrinth page.
  4. Two copies? Two versions of the same mod in one profile will clash. Remove the older one.
  5. Does the pack already do it? A second culling mod, lighting engine or Sodium add-on can clash with the included mods. Switch one off.
  6. Rescan. If you copied the jar into the folder by hand, press the refresh button on the profile's mod list.