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Missing ProtocolLib

A plugin fails because ProtocolLib (a common dependency) is not installed. Many plugins that manipulate packets require it, adding ProtocolLib resolves the dependency error.

Lỗi này có nghĩa là gì?
ProtocolLib is a library plugin that lets other plugins intercept and modify network packets. 'Dependency not found' here means a plugin needs ProtocolLib but it is missing, or the installed version does not match your server. 
Dependency not found
Nguyên nhân phổ biến nhất
  • ProtocolLib not installed at all.
  • A ProtocolLib version too old for your server.
  • ProtocolLib failing to load itself (so dependents fail too).
  • An incomplete plugin setup.
  • A development build mismatch on newer server versions.
Cách chẩn đoán
  1. Confirm ProtocolLib is present in plugins/.
  2. Check its version against your server version.
  3. Look for ProtocolLib's own load errors first.
  4. Read which plugin reports the missing dependency.
Các cách khắc phục được đề xuất
  • Install ProtocolLib
    Add the ProtocolLib build that supports your server version to plugins/.
  • Update ProtocolLib
    Use a current (or dev) build that supports your exact server version.
  • Fix ProtocolLib's own errors
    If ProtocolLib itself fails to load, resolve that first, dependents need it healthy.
  • Load order
    Ensure ProtocolLib loads before plugins that depend on it (it normally does automatically).
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Câu hỏi thường gặp

It provides a safe way for plugins to read and modify Minecraft network packets.

One that explicitly supports your server version, newer servers often need a recent or dev build.

They all depend on ProtocolLib, if it is missing or broken, every dependent fails.