[17:58:51 WARN]: Exception in thread "Craft Scheduler Thread - 42"
[17:58:51 WARN]: org.apache.commons.lang.UnhandledException: Plugin DeluxeMenus v1.10.5 generated an exception while executing task 869
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NoSuchMethodError: org.bukkit.inventory.PlayerInventory.getItemInMainHand()Lorg/bukkit/inventory/ItemStack;
        at com.extendedclip.papi.expansion.player.PlayerExpansion.onRequest(PlayerExpansion.java:181)
        at me.clip.placeholderapi.PlaceholderAPI.setPlaceholders(PlaceholderAPI.java:237)
        at me.clip.placeholderapi.PlaceholderAPI.setPlaceholders(PlaceholderAPI.java:377)
        at com.extendedclip.deluxemenus.menu.MenuItem.getItemStack(MenuItem.java:360)
        at com.extendedclip.deluxemenus.menu.Menu$2.run(Menu.java:232)
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:59)
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
        ... 3 more