1.21.3 console error Could not initialize class com.hm.antiworldfly.particle.FancyMessageSender

[mrpunky]

[17:13:13] [Server thread/WARN]: [AntiWorldFly] Task #212136 for AntiWorldFly v2.5.2 generated an exception
java.lang.NoClassDefFoundError: Could not initialize class com.hm.antiworldfly.particle.FancyMessageSender
at AntiWorldFly-2.5.2.jar/com.hm.antiworldfly.AntiWorldFlyRunnable.run(AntiWorldFlyRunnable.java:45) ~[AntiWorldFly-2.5.2.jar:?]
at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:78) ~[universe-1.21.3.jar:1.21.3-6a50f37]
at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:474) ~[universe-1.21.3.jar:1.21.3-6a50f37]
at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1760) ~[universe-1.21.3.jar:1.21.3-6a50f37]
at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1631) ~[universe-1.21.3.jar:1.21.3-6a50f37]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1313) ~[universe-1.21.3.jar:1.21.3-6a50f37]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:343) ~[universe-1.21.3.jar:1.21.3-6a50f37]
at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: java.lang.ExceptionInInitializerError: Exception java.lang.ArrayIndexOutOfBoundsException: Index 3 out of bounds for length 3 [in thread "Server thread"]
at AntiWorldFly-2.5.2.jar/com.hm.antiworldfly.particle.FancyMessageSender.(FancyMessageSender.java:23) ~[AntiWorldFly-2.5.2.jar:?]
... 8 more

spams this in console

[Sidpatchy]

Hello!

I just spun up the latest build of Spigot 1.21.3 and I am not seeing any errors.

I see the server software you are using is calling itself 'universe-1.21.3.jar'. This is not standard for Paper or Spigot servers. What server software are you using? I've been out of the loop on that side of things for quite a while now.

Can you please provide me with the output of /version? Also, can you please provide me with steps to reproduce this if you are taking certain actions to cause this message?

Ignore me. Looks like an issue with Paper and its forks. I am looking into it.

[Sidpatchy]

This should be fixed in the newly released AntiWorldFly v2.5.4.