Hello
This is a great plugin but I hope the developer can fix this bug: when I click on the button to go to the next page (I have more than 100 pets) my console reports an error that cannot go to the next page

[08:23:20 ERROR]: Could not pass event InventoryClickEvent to MysticalPets v1.0-SNAPSHOT
java.lang.IndexOutOfBoundsException: Index -21 out of bounds for length 146
at java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:100) ~[?:?]
at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:106) ~[?:?]
at java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:302) ~[?:?]
at java.base/java.util.Objects.checkIndex(Objects.java:385) ~[?:?]
at java.base/java.util.ArrayList.get(ArrayList.java:427) ~[?:?]
at MysticalPets-1.21.1.jar/io.github.CodeerStudio.mysticalPets.gui.MainPetGUI.openGUI(MainPetGUI.java:67) ~[MysticalPets-1.21.1.jar:?]
at MysticalPets-1.21.1.jar/io.github.CodeerStudio.mysticalPets.gui.MainPetGUI.handleInventoryClick(MainPetGUI.java:104) ~[MysticalPets-1.21.1.jar:?]
at MysticalPets-1.21.1.jar/io.github.CodeerStudio.mysticalPets.listeners.GUIEventListener.onInventoryClick(GUIEventListener.java:20) ~[MysticalPets-1.21.1.jar:?]
at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor1021.execute(Unknown Source) ~[?:?]
at org.bukkit.plugin.EventExecutor$2.execute(EventExecutor.java:77) ~[paper-mojangapi-1.21.1-R0.1-SNAPSHOT.jar:?]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[paper-mojangapi-1.21.1-R0.1-SNAPSHOT.jar:1.21.1-81-13a2395]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[paper-mojangapi-1.21.1-R0.1-SNAPSHOT.jar:?]
at io.papermc.paper.plugin.manager.PaperEventManager.callEvent(PaperEventManager.java:54) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.callEvent(PaperPluginManagerImpl.java:131) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:628) ~[paper-mojangapi-1.21.1-R0.1-SNAPSHOT.jar:?]
at net.minecraft.server.network.ServerGamePacketListenerImpl.handleContainerClick(ServerGamePacketListenerImpl.java:3216) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.network.protocol.game.ServerboundContainerClickPacket.handle(ServerboundContainerClickPacket.java:69) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.network.protocol.game.ServerboundContainerClickPacket.handle(ServerboundContainerClickPacket.java:33) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.network.protocol.PacketUtils.lambda$ensureRunningOnSameThread$0(PacketUtils.java:56) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.server.TickTask.run(TickTask.java:18) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:151) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1537) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:201) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:125) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1514) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1507) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:135) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.server.MinecraftServer.managedBlock(MinecraftServer.java:1466) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:1473) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1318) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:330) ~[paper-1.21.1.jar:1.21.1-81-13a2395]
at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]


I hope this plugin will always be updated and I love it very much