Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:
I have no idea, all my other plugins work fine with protocol lib, one specific one its calls to Protocollibrary are just dead, all null returns.

Expected behavior
Should return a real instance, not null

Screenshots
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Version Info
https://pastebin.com/a0CWUwtS

Additional context
How can I get an alive instance of protocollib? the static protocollibrary in this plugin is not loaded.

Which plugin?

I had the exact same issue and found that I was accidentally shading ProtocolLib into my plugin. If you use the Maven shade plugin as part of your build process, make sure you specify the scope as provided in your pom.xml. (If you don't specify anything, it defaults to compile)