Error on itemsearch

[Frankkko]

• Stacksize for backpacks don't seem to work;
• Wanted to check if I'm using the right item;
• Searching for backpack gave no result;
• Tried your example, 'pic', no result, checked console:

stacksizecontroller.itemsearch pic Failed to call hook 'ItemSearchCommand' on plugin 'StackSizeController v4.1.3' (KeyNotFoundException: The given key 'concretepickaxe' was not present in the dictionary.) at System.Collections.Generic.Dictionary2[TKey,TValue].get_Item (TKey key) [0x0001e] in :0
at Oxide.Plugins.StackSizeController.ItemSearchCommand (Oxide.Core.Libraries.Covalence.IPlayer player, System.String command, System.String[] args) [0x000d9] in <838c4acdf0394122956d3588b817c45f>:0
at Oxide.Plugins.StackSizeController.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00074] in <838c4acdf0394122956d3588b817c45f>: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 :0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in :0 `