Updated to 6.0.3

eco-api/src/main/java/com/willfp/eco/util/ArrowUtils.java

@@ -29,10 +29,10 @@ public class ArrowUtils {
             return null;
         }
 
-        if (!(values.get(0) instanceof ItemStack)) {
+        if (!(values.get(0).value() instanceof ItemStack)) {
             return null;
         }
 
-        return (ItemStack) values.get(0);
+        return (ItemStack) values.get(0).value();
     }
 }

eco-core/core-plugin/src/main/java/com/willfp/eco/spigot/gui/GUIListener.java

@@ -54,6 +54,10 @@ public class GUIListener extends PluginDependent<EcoPlugin> implements Listener
 
         Menu menu = MenuHandler.getMenu(event.getInventory());
 
+        if (menu == null) {
+            return;
+        }
+
         Validate.isTrue(menu instanceof EcoMenu, "Menu not instance of EcoMenu!");
 
         EcoMenu ecoMenu = (EcoMenu) menu;

gradle.properties

@@ -1,2 +1,2 @@
-version = 6.0.1
+version = 6.0.3
 plugin-name = eco