Purchase option doesn't work, though, the selling to shop feature still does. 

No codes in RCON that I see. 

Thank you

| Failed to call hook 'ConsoleGUIShopBuy' on plugin 'GUIShop v2.4.47' (InvalidCastException: Null object cannot be converted to a value type.)

at System.Convert.ChangeType (System.Object value, System.Type conversionType, System.IFormatProvider provider) [0x00019] in <b11ba2a8fbf24f219f7cc98532a11304>:0

at System.Convert.ChangeType (System.Object value, System.Type conversionType) [0x00007] in <b11ba2a8fbf24f219f7cc98532a11304>:0

at Oxide.Core.Plugins.Plugin.Call[T] (System.String hook, System.Object[] args) [0x00008] in <beb2b64691c64e2b95b99491bd85442c>:0

at Oxide.Plugins.GUIShop.TakeCurrency (Oxide.Plugins.GUIShop+ShopCategory shop, BasePlayer player, System.Double amount) [0x00101] in <ff3207ae031c4af997192ca51b1007d8>:0

at Oxide.Plugins.GUIShop.TryShopBuy (BasePlayer player, System.String shopKey, System.String item, System.Int32 amount, System.Boolean isAll) [0x0018d] in <ff3207ae031c4af997192ca51b1007d8>:0

at Oxide.Plugins.GUIShop.ConsoleGUIShopBuy (ConsoleSystem+Arg arg, Oxide.Plugins.GUIShop+ShopCategory shopCategory) [0x002e6] in <ff3207ae031c4af997192ca51b1007d8>:0

at Oxide.Plugins.GUIShop.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00abc] in <ff3207ae031c4af997192ca51b1007d8>:0

at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <795304323ac74a298b8ed190a1dfa739>: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

(16:22:08) | Failed to call hook 'ConsoleGUIShopBuy' on plugin 'GUIShop v2.4.47' (InvalidCastException: Null object cannot be converted to a value type.)

at System.Convert.ChangeType (System.Object value, System.Type conversionType, System.IFormatProvider provider) [0x00019] in <b11ba2a8fbf24f219f7cc98532a11304>:0

at System.Convert.ChangeType (System.Object value, System.Type conversionType) [0x00007] in <b11ba2a8fbf24f219f7cc98532a11304>:0

at Oxide.Core.Plugins.Plugin.Call[T] (System.String hook, System.Object[] args) [0x00008] in <beb2b64691c64e2b95b99491bd85442c>:0

at Oxide.Plugins.GUIShop.TakeCurrency (Oxide.Plugins.GUIShop+ShopCategory shop, BasePlayer player, System.Double amount) [0x00101] in <ff3207ae031c4af997192ca51b1007d8>:0

at Oxide.Plugins.GUIShop.TryShopBuy (BasePlayer player, System.String shopKey, System.String item, System.Int32 amount, System.Boolean isAll) [0x0018d] in <ff3207ae031c4af997192ca51b1007d8>:0

at Oxide.Plugins.GUIShop.ConsoleGUIShopBuy (ConsoleSystem+Arg arg, Oxide.Plugins.GUIShop+ShopCategory shopCategory) [0x002e6] in <ff3207ae031c4af997192ca51b1007d8>:0

at Oxide.Plugins.GUIShop.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00abc] in <ff3207ae031c4af997192ca51b1007d8>:0

at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <795304323ac74a298b8ed190a1dfa739>: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

(16:22:10) | Failed to call hook 'ConsoleGUIShopBuy' on plugin 'GUIShop v2.4.47' (InvalidCastException: Null object cannot be converted to a value type.)

at System.Convert.ChangeType (System.Object value, System.Type conversionType, System.IFormatProvider provider) [0x00019] in <b11ba2a8fbf24f219f7cc98532a11304>:0

at System.Convert.ChangeType (System.Object value, System.Type conversionType) [0x00007] in <b11ba2a8fbf24f219f7cc98532a11304>:0

at Oxide.Core.Plugins.Plugin.Call[T] (System.String hook, System.Object[] args) [0x00008] in <beb2b64691c64e2b95b99491bd85442c>:0

at Oxide.Plugins.GUIShop.TakeCurrency (Oxide.Plugins.GUIShop+ShopCategory shop, BasePlayer player, System.Double amount) [0x00101] in <ff3207ae031c4af997192ca51b1007d8>:0

at Oxide.Plugins.GUIShop.TryShopBuy (BasePlayer player, System.String shopKey, System.String item, System.Int32 amount, System.Boolean isAll) [0x0018d] in <ff3207ae031c4af997192ca51b1007d8>:0

at Oxide.Plugins.GUIShop.ConsoleGUIShopBuy (ConsoleSystem+Arg arg, Oxide.Plugins.GUIShop+ShopCategory shopCategory) [0x002e6] in <ff3207ae031c4af997192ca51b1007d8>:0

at Oxide.Plugins.GUIShop.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00abc] in <ff3207ae031c4af997192ca51b1007d8>:0

at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <795304323ac74a298b8ed190a1dfa739>: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

Please accept my apologies for the delay, this is being checked and fixed now!

I have this too now:

Failed to call hook 'ConsoleGUIShopBuy' on plugin 'GUIShop v2.4.48' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.GUIShop.TryShopBuy (BasePlayer player, System.String shopKey, System.String item, System.Int32 amount, System.Boolean isAll) [0x00330] in :0 
  at Oxide.Plugins.GUIShop.ConsoleGUIShopBuy (ConsoleSystem+Arg arg, Oxide.Plugins.GUIShop+ShopCategory shopCategory) [0x002e6] in :0 
  at Oxide.Plugins.GUIShop.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00abc] in :0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <795304323ac74a298b8ed190a1dfa739>: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 ​