ITEMS button still broken (2.1.3)

Hello, I updated to 2.1.3 and I'm still getting this error in console when clicking "ITEMS" button: 

Failed executing console command 'carbonprotecc_p4t8hh1S47oSkS' in 'ShoppyStock v2.1.3 by ThePitereq' [callback] (The given key 'twowaymirror.window' was not present in the dictionary.)
   at int System.Collections.Generic.Dictionary<string, int>.get_Item(string key)
   at void Oxide.Plugins.ShoppyStock.DrawCategory(CUI cui, BasePlayer player, ShoppyCache sc, StringBuilder sb) in /home/container/carbon/plugins/ShoppyStock.cs:line 6018
   at void Oxide.Plugins.ShoppyStock.UpdateShopCategory(BasePlayer player, string newCategory, CUI cui, StringBuilder sb, ShoppyCache sc, bool force) in /home/container/carbon/plugins/ShoppyStock.cs:line 5756
   at void Oxide.Plugins.ShoppyStock.SwitchShopCategory(BasePlayer player, string newCategory, bool affordableSwitch, bool force) in /home/container/carbon/plugins/ShoppyStock.cs:line 5734
   at void Oxide.Plugins.ShoppyStock.ShoppyStockConsoleCommand(Arg arg) in /home/container/carbon/plugins/ShoppyStock.cs:line 4509
   at object System.Reflection.RuntimeMethodInfo.Invoke(object obj, BindingFlags invokeAttr, Binder binder, object[] parameters, CultureInfo culture)

seems to have been an issue in the shop configs. has a twowaymirror item that doesn't exist. deleted that item and now we're good.