1.21.1 is not registering

[Ninja1986]

• This issue is not solved in a development build

Describe the bug
ProtocolLib is showing as red in my plugin list, I am running a 1.21.1 paper server on Apex with the newest version of PL. this means that other plugins that use PL for a dependency do not work. I am not fully sure what to do as I cant add the info below as I can't run dumps etc.

To Reproduce
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4. See error

Expected behavior
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Screenshots
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Version Info
Provide your ProtocolLib install info with /protocol dump through pastebin.

Additional context
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[blackysky]

Are you using ProtocolLib downloaded from SpigotMC or from Jenkins?

I just had the same problem.
Downloaded version 5.3.0 for versions => 1.20.5 and the error was fixed.

Try doing the same here.