CommandAPI version

9.4.0

Minecraft version

1.20.4

Are you shading the CommandAPI?

No

What I did

I put the mojang-mapped CommandAPI plugin inside the plugins folder and started a 1.20.4 mojang-mapped Paper server.

What actually happened

A bunch of errors appeared in console.

What should have happened

CommandAPI should have loaded without errors.

Server logs and CommandAPI config

Logs: https://paste.gg/p/anonymous/181a4dcd5405451e919576b4857dee81

Other

I originally discovered this while upgrading UltimateAdvancementAPI from using CommandAPI 9.3.0 to 9.4.0. UltimateAdvancementAPI uses the shaded version, but the issue also occurs with the plugin version.

Also, the issue doesn't occur in 1.20.5 and 1.20.6, but it's present in older versions (tested with mojang-mapped Paper 1.19.4 and 1.18.2).