Unhandled exception executing command 'triton:language'

[sprytex]

Describe the bug

[04:02:55 INFO]: MichaelKozlov issued server command: /triton:language
[04:02:55 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'triton:language' in plugin Triton v3.11.2
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[patched_1.12.2.jar:git-Dionysus-"25c8195"]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:152) ~[patched_1.12.2.jar:git-Dionysus-"25c8195"]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:688) ~[patched_1.12.2.jar:git-Dionysus-"25c8195"]
at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1578) ~[patched_1.12.2.jar:git-Dionysus-"25c8195"]
at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1383) ~[patched_1.12.2.jar:git-Dionysus-"25c8195"]
at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) ~[patched_1.12.2.jar:git-Dionysus-"25c8195"]
at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:5) ~[patched_1.12.2.jar:git-Dionysus-"25c8195"]
at net.minecraft.server.v1_12_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:14) ~[patched_1.12.2.jar:git-Dionysus-"25c8195"]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572) ~[?:?]
at java.util.concurrent.FutureTask.run(FutureTask.java:317) ~[?:?]
at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) ~[patched_1.12.2.jar:git-Dionysus-"25c8195"]
at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:866) ~[patched_1.12.2.jar:git-Dionysus-"25c8195"]
at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:429) ~[patched_1.12.2.jar:git-Dionysus-"25c8195"]
at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:790) ~[patched_1.12.2.jar:git-Dionysus-"25c8195"]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:681) ~[patched_1.12.2.jar:git-Dionysus-"25c8195"]
at java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: java.lang.IncompatibleClassChangeError: Method 'org.bukkit.block.banner.PatternType org.bukkit.block.banner.PatternType.valueOf(java.lang.String)' must be Methodref constant
at com.rexcantor64.triton.wrappers.items.ItemStackParser.bannerToItemStack(ItemStackParser.java:52) ~[?:?]
at com.rexcantor64.triton.SpigotMLP.lambda$openLanguagesSelectionGUI$3(SpigotMLP.java:221) ~[?:?]
at java.util.Optional.ifPresent(Optional.java:178) ~[?:?]
at com.rexcantor64.triton.SpigotMLP.openLanguagesSelectionGUI(SpigotMLP.java:209) ~[?:?]
at com.rexcantor64.triton.commands.OpenSelectorCommand.handleCommand(OpenSelectorCommand.java:26) ~[?:?]
at com.rexcantor64.triton.commands.handler.CommandHandler.handleCommand(CommandHandler.java:47) ~[?:?]
at com.rexcantor64.triton.commands.handler.SpigotCommandHandler.onCommand(SpigotCommandHandler.java:18) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[patched_1.12.2.jar:git-Dionysus-"25c8195"]
... 15 more

How can the bug be reproduced?

[04:02:55 INFO]: MichaelKozlov issued server command: /triton:language

Expected behaviour

No response

Which Spigot fork are you using?

Vanilla Spigot (from BuildTools)

What's your server version?

ver [04:00:57 INFO]: This server is running Dionysus version git-Dionysus-"25c8195" (MC: 1.12.2) (Implementing API version 1.12.2-R0.1-SNAPSHOT) [04:00:57 INFO]: Checking version, please wait... [04:00:57 INFO]: Unknown version, custom build?

Which proxy are you using?

I'm not using a proxy

What's your proxy version?

No response

What's the MC version of your client?

1.12.2

What's the Triton version you're using?

bfde332

Additional Information

No response

[sprytex]