Failed to call hook 'shop_cmd'

what have i did wrong lol 

Failed to call hook 'shop_cmd' on plugin 'Shop v1.1.62' (KeyNotFoundException: The given key was not present in the dictionary.)
  at System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey key) [0x0001e] in :0 
  at Oxide.Plugins.Shop.BuildChecks (BasePlayer player) [0x00068] in :0 
  at Oxide.Plugins.Shop.Buy (BasePlayer player, System.String category, System.String itemName, System.Int32 amount) [0x00000] in :0 
  at Oxide.Plugins.Shop.shop_cmd (ConsoleSystem+Arg arg) [0x00053] in :0 
  at Oxide.Plugins.Shop.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x01320] in :0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in :0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in :0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in :0 

You opened ticket on my discord so I handle it there.

Changed Status from Pending to Closed