• This issue is not solved in a development build

Describe the bug
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When I'm joining my Paper 1.21.7 Server with Protocollib on my Server, I have this warning:

To Reproduce
Steps to reproduce the behavior:

1. Create 1.21.7 Paper Server
2. Upload Protocollib on your Server
3. Join your Server
4. See error

Expected behavior
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it should works

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

https://pastebin.com/zjzvEmxx

Additional context
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finally, a consequence of the paper hard fork. i feared this day would come. will require some thinking on how best to handle it since this event does not appear to exist in spigot

finally, a consequence of the paper hard fork. I feared this day would come. will require some thinking on how best to handle it, since this event does not appear to exist in Spigot

Mmmh, you can't try like a condition with the paper's mapping? If the paper's mapping exists (for example), you're using this event instead of the new one.
Or, you're filtering the /version (by checking the MC version)?

right, that's the basic idea. challenge is that we compile against spigot

right, that's the basic idea. challenge is that we compile against spigot

After some search, it says that you can pass through reflections (like Bukkit.getServer().getClass().getPackage().getName();).

It shouldn't be a problem to compile against Spigot