Recent NRE not fixed with 2.3.9 of StackModifier

Using similar plugins as the creator of the post below this one and have the same issue randomly. Shop UI by David, BotReSpawn and StackModifier.

04/23 17:28:26 | Failed to call hook 'CanStackItem' on plugin 'StackModifier v2.3.9' (NullReferenceException: Object reference not set to an instance of an object)
at Oxide.Plugins.StackModifier.CanStackItem (Item item, Item targetItem) [0x0023e] in <9e53942b50974a0a8fe7ec87c5727230>:0
at Oxide.Plugins.StackModifier.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00138] in <9e53942b50974a0a8fe7ec87c5727230>:0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <87ce9ac9776a48658bc55eae6debe38b>:0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <cd7231f30b444d86bc6cca8a53cdd2ea>:0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <cd7231f30b444d86bc6cca8a53cdd2ea>:0
 

I don't have davids shop or botrespawn so i cannot test those plugins.

However guishop and serverwards are working just fine.

Are you able to sort out if its specific items causing it ?

Pls try update 2.4.2 

Most likely missing or invalid config items

Changed Status from Pending to Can't Reproduce