No errors but the plungin is giveing the correct item but wrong skin and its all set in config correctly 

Failed to call hook 'OnCollectiblePickup' on plugin 'ExtraGatherBonuses v1.0.5' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.ExtraGatherBonuses.CheckBonus (BasePlayer player, Oxide.Plugins.ExtraGatherBonuses+GatherInfo info) [0x00000] in <fd0ee38b83594e2ab7ad3f7fe69c3b37>:0

  at Oxide.Plugins.ExtraGatherBonuses.OnGather (BasePlayer player, System.String name) [0x00053] in <fd0ee38b83594e2ab7ad3f7fe69c3b37>:0

  at Oxide.Plugins.ExtraGatherBonuses.OnCollectiblePickup (CollectibleEntity collectible, BasePlayer player) [0x00012] in <fd0ee38b83594e2ab7ad3f7fe69c3b37>:0

  at Oxide.Plugins.ExtraGatherBonuses.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x000a3] in <fd0ee38b83594e2ab7ad3f7fe69c3b37>:0

  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <23ba99f131254889867c71f0bd137b1d>:0

  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <157a94ee66ab4a7991faecd1eb84be3b>:0

  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <157a94ee66ab4a7991faecd1eb84be3b>:0

+same