pockethorses editing gui errors

[13:03:48] [Server thread/ERROR]: Could not pass event InventoryCloseEvent to Bin v1.1
org.bukkit.event.EventException: null
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:589) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:576) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.craftbukkit.v1_20_R1.event.CraftEventFactory.handleInventoryCloseEvent(CraftEventFactory.java:1433) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at it.pika.libs.anvilgui.version.Wrapper1_20_R1.handleInventoryCloseEvent(Wrapper1_20_R1.java:43) ~[?:?]
        at it.pika.libs.anvilgui.AnvilGUI.closeInventory(AnvilGUI.java:205) ~[?:?]
        at it.pika.libs.anvilgui.AnvilGUI.closeInventory(AnvilGUI.java:187) ~[?:?]
        at it.pika.libs.anvilgui.AnvilGUI$ResponseAction.lambda$close$2(AnvilGUI.java:651) ~[?:?]
        at it.pika.libs.anvilgui.AnvilGUI$ListenUp.lambda$onInventoryClick$0(AnvilGUI.java:265) ~[?:?]
        at java.util.concurrent.CompletableFuture.uniAcceptNow(CompletableFuture.java:757) ~[?:?]
        at java.util.concurrent.CompletableFuture.uniAcceptStage(CompletableFuture.java:735) ~[?:?]
        at java.util.concurrent.CompletableFuture.thenAccept(CompletableFuture.java:2182) ~[?:?]
        at it.pika.libs.anvilgui.AnvilGUI$ListenUp.onInventoryClick(AnvilGUI.java:272) ~[?:?]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
        at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
        at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:589) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:576) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        at net.minecraft.server.network.PlayerConnection.a(PlayerConnection.java:2783) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.network.protocol.game.PacketPlayInWindowClick.a(SourceFile:58) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.network.protocol.game.PacketPlayInWindowClick.a(SourceFile:13) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.network.protocol.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:31) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.server.TickTask.run(SourceFile:18) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.util.thread.IAsyncTaskHandler.d(SourceFile:156) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.util.thread.IAsyncTaskHandlerReentrant.d(SourceFile:23) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:1152) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:1) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.util.thread.IAsyncTaskHandler.x(SourceFile:130) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.server.MinecraftServer.bg(MinecraftServer.java:1131) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.server.MinecraftServer.x(MinecraftServer.java:1124) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.util.thread.IAsyncTaskHandler.bp(SourceFile:115) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.server.MinecraftServer.p_(MinecraftServer.java:1107) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1019) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at net.minecraft.server.MinecraftServer.lambda$0(MinecraftServer.java:304) ~[spigot-1.20.1-R0.1-SNAPSHOT.jar:3822-Spigot-9ebce8a-b60a95c]
        at java.lang.Thread.run(Thread.java:833) ~[?:?]
Caused by: java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0
        at jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64) ~[?:?]
        at jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70) ~[?:?]
        at jdk.internal.util.Preconditions.checkIndex(Preconditions.java:266) ~[?:?]
        at java.util.Objects.checkIndex(Objects.java:359) ~[?:?]
        at java.util.ArrayList.get(ArrayList.java:427) ~[?:?]
        at com.ashkiano.bin.Bin.onInventoryClose(Bin.java:40) ~[?:?]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
        at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
        at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-api-1.20.1-R0.1-SNAPSHOT.jar:?]
        ... 38 more