error

Hi, we're getting this error on the console when we pick up an item with the hammer. The item disappears; it's not saved in the inventory. Right now, what's happening the most are minicopters. We have the Portable Vehicles plugin and the spawn heli. Do you think you could give me some help?

Failed to call hook 'OnHammerHit' on plugin 'PlaceAnything v1.0.63' (NullReferenceException: Object reference not set to an instance of an object) at Oxide.Plugins.PlaceAnything.RefundItem (BasePlayer player, System.String itemName) [0x00032] in <7ade50bb399b4c998b77d1a2163b809b>:0 at Oxide.Plugins.PlaceAnything+Mono.RunPickUp (BasePlayer player, BaseEntity _entity, System.String itemName) [0x0004f] in <7ade50bb399b4c998b77d1a2163b809b>:0 at Oxide.Plugins.PlaceAnything.OnHammerHit (BasePlayer player, HitInfo info) [0x00111] in <7ade50bb399b4c998b77d1a2163b809b>:0 at Oxide.Plugins.PlaceAnything.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x000b0] in <7ade50bb399b4c998b77d1a2163b809b>:0 at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <42f9bedc659b4f4786eb778d3cd58968>:0 at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in <d59b507fd76240e5b62228d0eae39b73>:0 at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <d59b507fd76240e5b62228d0eae39b73>:0 Effect.Init - invalid entity

Now we are getting this error too, could you tell me what I can do to solve these errors?