error?

Failed to call hook 'ConfirmEnhancement' on plugin 'ItemPerks v1.0.21' (NullReferenceException: Object reference not set to an instance of an object) at Oxide.Plugins.ItemPerks.GetOwnershipDescription (BasePlayer player, Item item, System.Boolean found) [0x00012] in <713109c9e40a4113ae8d68dc8ccf6ae1>:0 at Oxide.Plugins.ItemPerks.EnhanceExistingItem (BasePlayer player, Item item, Oxide.Plugins.ItemPerks+Perk perk) [0x0011b] in <713109c9e40a4113ae8d68dc8ccf6ae1>:0 at Oxide.Plugins.ItemPerks.ConfirmEnhancement (ConsoleSystem+Arg arg) [0x005ea] in <713109c9e40a4113ae8d68dc8ccf6ae1>:0 at Oxide.Plugins.ItemPerks.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x03f77] in <713109c9e40a4113ae8d68dc8ccf6ae1>:0 at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <42f9bedc659b4f4786eb778d3cd58968>:0 at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in <8cb2d664f1574f2b96d53f1c1869d96a>:0 at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <8cb2d664f1574f2b96d53f1c1869d96a>:0