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Paper/Bukkit Plugin on Forge Server

A Bukkit/Paper plugin was put on a Forge server, which has no plugin loader. Forge runs mods, not Bukkit plugins, so the plugin cannot be loaded at all.

What does this error mean?
'No plugin loader found' means the server has no Bukkit plugin system. Forge is a mod loader, it does not implement the Bukkit API plugins rely on, so a plugin has nothing to load it. 
No plugin loader found
Most Common Causes
  • Installing a Bukkit/Paper plugin on pure Forge.
  • Expecting Forge to read a plugins/ folder.
  • Confusing plugins and mods.
  • Wanting plugin features on a modded server.
  • Following Bukkit instructions on a Forge setup.
How To Diagnose
  1. Confirm the file is a Bukkit plugin (has plugin.yml).
  2. Confirm the server is pure Forge (no Bukkit API).
  3. Recognize Forge has no plugin loader.
  4. Decide whether you need mods, plugins, or both.
Recommended Fixes
  • Use a hybrid server
    Run Mohist or Arclight to support both Forge mods and Bukkit plugins (with stability trade-offs).
  • Find a mod equivalent
    Many plugin features have Forge mod counterparts, use those on a pure Forge server.
  • Choose Paper for plugins
    If you mainly want plugins, run Paper instead of Forge.
  • Remove the plugin
    Take the plugin off the Forge server since it cannot load there.
Analyze My Log
Frequently Asked Questions

Forge implements the mod loader, not the Bukkit plugin API, so plugins have no loader to use.

Hybrids work but can be less stable and harder to support, weigh that against the convenience.

Search for a Forge mod offering the same feature, many common plugin functions exist as mods.