Plugin doesn't load on PaperMC 1.20.6

Hello! I've been trying to use this plugin on PaperMC 1.20.6 but the plugin doesn't load and gives this error:

[Server thread/ERROR]: [ModernPluginLoadingStrategy] Could not load plugin 'FurnitureMaker-2.3.0 (1).jar' in folder 'plugins\.paper-remapped'
org.bukkit.plugin.InvalidPluginException: java.lang.ExceptionInInitializerError
    at io.papermc.paper.plugin.provider.type.spigot.SpigotPluginProvider.createInstance(SpigotPluginProvider.java:129) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
    at io.papermc.paper.plugin.provider.type.spigot.SpigotPluginProvider.createInstance(SpigotPluginProvider.java:35) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
    at io.papermc.paper.plugin.entrypoint.strategy.modern.ModernPluginLoadingStrategy.loadProviders(ModernPluginLoadingStrategy.java:116) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
    at io.papermc.paper.plugin.storage.SimpleProviderStorage.enter(SimpleProviderStorage.java:38) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
    at io.papermc.paper.plugin.entrypoint.LaunchEntryPointHandler.enter(LaunchEntryPointHandler.java:36) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
    at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:532) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
    at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:286) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
    at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1136) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
    at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:323) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
    at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: java.lang.ExceptionInInitializerError
    at java.base/java.lang.Class.forName0(Native Method) ~[?:?]
    at java.base/java.lang.Class.forName(Class.java:534) ~[?:?]
    at java.base/java.lang.Class.forName(Class.java:513) ~[?:?]
    at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:78) ~[paper-api-1.20.6-R0.1-SNAPSHOT.jar:?]
    at io.papermc.paper.plugin.provider.type.spigot.SpigotPluginProvider.createInstance(SpigotPluginProvider.java:125) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
    ... 9 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: Index 3 out of bounds for length 3
    at FurnitureMaker-2.3.0 (1).jar/de.Ste3et_C0st.DiceFunitureMaker.FurnitureMakerPlugin.getBukkitVersion(FurnitureMakerPlugin.java:108) ~[FurnitureMaker-2.3.0 (1).jar:?]
    at FurnitureMaker-2.3.0 (1).jar/de.Ste3et_C0st.DiceFunitureMaker.FurnitureMakerPlugin.getVersionInt(FurnitureMakerPlugin.java:96) ~[FurnitureMaker-2.3.0 (1).jar:?]
    at FurnitureMaker-2.3.0 (1).jar/de.Ste3et_C0st.DiceFunitureMaker.FurnitureMakerPlugin.<clinit>(FurnitureMakerPlugin.java:33) ~[FurnitureMaker-2.3.0 (1).jar:?]
    at java.base/java.lang.Class.forName0(Native Method) ~[?:?]
    at java.base/java.lang.Class.for
Name(Class.java:534) ~[?:?]
    at java.base/java.lang.Class.forName(Class.java:513) ~[?:?]
    at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:78) ~[paper-api-1.20.6-R0.1-SNAPSHOT.jar:?]
    at io.papermc.paper.plugin.provider.type.spigot.SpigotPluginProvider.createInstance(SpigotPluginProvider.java:125) ~[paper-1.20.6.jar:1.20.6-147-e41d44f]
    ... 9 more

I'm running PaperMC 1.20.6 #147, FurnitureLib-3.2.1, FurnitureMaker-2.3.0 and the latest ProtocolLib dev build (as of writing, #723) And here is the full server start up log: latest.log

Ste3et / FurnitureMaker

Plugin doesn't load on PaperMC 1.20.6 #8