claiming items is not working

1. mate added M249 for 1 scrap

2. i bought it

3. he cant claim and error is thrown 

(15:59:42) | Failed to call hook 'MarketClaimInventoryPageCommand' on plugin 'MarketplacePlus v1.1.2' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.MarketplacePlus+MarketController.UpdateItem (Item item, Oxide.Plugins.MarketplacePlus+MarketItem marketItem) [0x0009a] in <e7f74c794ef44d13ab376a1da324ba72>:0 
  at Oxide.Plugins.MarketplacePlus+MarketController.ClaimPage (BasePlayer player, System.Boolean confirmed) [0x004d2] in <e7f74c794ef44d13ab376a1da324ba72>:0 
  at Oxide.Plugins.MarketplacePlus.MarketClaimInventoryPageCommand (Oxide.Core.Libraries.Covalence.IPlayer iPlayer, System.String command, System.String[] args) [0x0004a] in <e7f74c794ef44d13ab376a1da324ba72>:0 
  at Oxide.Plugins.MarketplacePlus.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00550] in <e7f74c794ef44d13ab376a1da324ba72>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <cd9a02fd331347bd82d550bb1a9c8e9f>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <b76ec77c47d1449e92b2baab8603843d>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <b76ec77c47d1449e92b2baab8603843d>:0
(15:59:53) | [Marketplace Plus] Error: Slot data is null on item claim, please inform developer

Changed Status from Pending to Closed

Changed Fixed In to 1.1.4