Not working on 1.20.6

[shinytreecko]

Below is the error I received while trying to enable this plugin on my server running 1.20.6 with Paper.

[21:12:10 ERROR]: Error occurred while enabling PetMaster v1.12.5 (Is it up to date?)
java.lang.ArrayIndexOutOfBoundsException: Index 3 out of bounds for length 3
        at PetMaster.jar/com.hm.petmaster.PetMaster.onEnable(PetMaster.java:99) ~[PetMaster.jar:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:287) ~[paper-api-1.20.6-R0.1-SNAPSHOT.jar:?]
        at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.enablePlugin(PaperPluginInstanceManager.java:202) ~[paper-1.20.6.jar:git-Paper-36]
        at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.enablePlugin(PaperPluginManagerImpl.java:109) ~[paper-1.20.6.jar:git-Paper-36]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:519) ~[paper-api-1.20.6-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.craftbukkit.CraftServer.enablePlugin(CraftServer.java:639) ~[paper-1.20.6.jar:git-Paper-36]
        at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:551) ~[paper-1.20.6.jar:git-Paper-36]
        at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:682) ~[paper-1.20.6.jar:git-Paper-36]
        at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:441) ~[paper-1.20.6.jar:git-Paper-36]
        at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:324) ~[paper-1.20.6.jar:git-Paper-36]
        at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1140) ~[paper-1.20.6.jar:git-Paper-36]
        at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:326) ~[paper-1.20.6.jar:git-Paper-36]
        at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]
[21:12:10 INFO]: [PetMaster] Disabling PetMaster v1.12.5
[21:12:10 INFO]: [PetMaster] PetMaster has been disabled.