Failed hook

Getting this error in console. As far as i know item perks are working fine and havent had any complaints. 

(13:31:41) | Failed to call hook 'OnItemAction' on plugin 'SkillTreeItems v1.0.2' (NullReferenceException: Object reference not set to an instance of an object)

at Oxide.Plugins.SkillTreeItems.IsXPItem (Item item) [0x00000] in <d2c6409e0f9a4b89a657eb0138d030d3>:0

at Oxide.Plugins.SkillTreeItems.OnItemAction (Item item, System.String action, BasePlayer player) [0x00031] in <d2c6409e0f9a4b89a657eb0138d030d3>:0

at Oxide.Plugins.SkillTreeItems.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x008f0] in <d2c6409e0f9a4b89a657eb0138d030d3>:0

at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <206a0f2c6ee141f38e2ad549cde44d70>:0

at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in <beb2b64691c64e2b95b99491bd85442c>:0

at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <beb2b64691c64e2b95b99491bd85442c>:0

Do you know what items are causing this? It wouldn't be the xp items directly.

not sure at all, this is just a random error that I noticed looking at the console.

Do you have cooking by chance?

Yes sir

Are you using recipe cards with cooking? If so, try and learn a recipe and see if the error pops up.