SpigotCore_14/src/de/steamwar/inventory/SWItem_14.java

@@ -19,6 +19,7 @@
 
 package de.steamwar.inventory;
 
+import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.SkullMeta;
@@ -269,7 +270,7 @@ class SWItem_14 {
         ItemStack head = new ItemStack(Material.PLAYER_HEAD, 1);
         SkullMeta headmeta = (SkullMeta) head.getItemMeta();
         assert headmeta != null;
-        headmeta.setOwner(player);
+        headmeta.setOwningPlayer(Bukkit.getOfflinePlayer(player));
         headmeta.setDisplayName(player);
         head.setItemMeta(headmeta);
         return head;