1.21.4 Paper Hard fork v50: java.lang.ExceptionInInitializerError

[cobrex1]

Updated my plugin to Foundation 6.9.13 and tested my plugin on paper 1.21.3 no issues.

Updated server to newest paper release 1.21.4, which is now the hard fork version of paper, and encountered the following error:

[06:33:42] [Server thread/INFO]: Cobrex_III issued server command: /tm
[06:33:42] [Server thread/ERROR]: TownyMenu 1.8.11 encountered an ExceptionInInitializerError! Please check your error.log and report this issue with the information in that file. Running Paper 1.21.4-R0.1-SNAPSHOT and Java 21.0.3
[06:33:42] [Server thread/INFO]: java.lang.ExceptionInInitializerError
[06:33:42] [Server thread/INFO]: at TownyMenu-1.8.11.jar//me.cobrex.townymenu.town.command.TownMenuCommand.onCommand(TownMenuCommand.java:35)
[06:33:42] [Server thread/INFO]: at TownyMenu-1.8.11.jar//me.cobrex.TownyMenu.lib.fo.command.SimpleCommand.execute(SimpleCommand.java:406)
[06:33:42] [Server thread/INFO]: at io.papermc.paper.command.brigadier.bukkit.BukkitCommandNode$BukkitBrigCommand.run(BukkitCommandNode.java:82)
[06:33:42] [Server thread/INFO]: at com.mojang.brigadier.context.ContextChain.runExecutable(ContextChain.java:73)
[06:33:42] [Server thread/INFO]: java.lang.NullPointerException: sound is marked non-null but is null
[06:33:42] [Server thread/INFO]: at TownyMenu-1.8.11.jar//me.cobrex.TownyMenu.lib.fo.model.SimpleSound.(SimpleSound.java:19)
[06:33:42] [Server thread/INFO]: at TownyMenu-1.8.11.jar//me.cobrex.TownyMenu.lib.fo.model.SimpleSound.(SimpleSound.java:66)
[06:33:42] [Server thread/INFO]: at TownyMenu-1.8.11.jar//me.cobrex.TownyMenu.lib.fo.menu.Menu.(Menu.java:79)
[06:33:42] [Server thread/INFO]: at TownyMenu-1.8.11.jar//me.cobrex.townymenu.town.command.TownMenuCommand.onCommand(TownMenuCommand.java:35)
[06:33:42] [Server thread/INFO]: at TownyMenu-1.8.11.jar//me.cobrex.TownyMenu.lib.fo.command.SimpleCommand.execute(SimpleCommand.java:406)
[06:33:42] [Server thread/INFO]: at io.papermc.paper.command.brigadier.bukkit.BukkitCommandNode$BukkitBrigCommand.run(BukkitCommandNode.java:82)
[06:33:42] [Server thread/INFO]: at com.mojang.brigadier.context.ContextChain.runExecutable(ContextChain.java:73)
[06:33:42] [Server thread/INFO]: [TownyMenu] !-----------------------------------------------------!
[06:33:42] [Server thread/INFO]: [TownyMenu] Failed to execute command /townmenu
[06:33:42] [Server thread/INFO]: [TownyMenu] !-----------------------------------------------------!
[06:33:42] [Server thread/INFO]: [TownyMenu 1.8.11] Command /townmenu took 116.02 ms

Thanks

[Ultimating]

To add, one of my users also reported a very similar error to this with one of my plugins built with Foundation.

Stacktrace