Here is such an error and does not load skins??

Failed to call hook 'OnItemAddedToContainer' on plugin 'Skins v2.2.2' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.Skins+ContainerController.DrawUI (System.Int32 page) [0x0003f] in <c8e299658aa244c8aed7c93ca63a4efc>:0

  at Oxide.Plugins.Skins+ContainerController.UpdateContent (System.Int32 page) [0x00205] in <c8e299658aa244c8aed7c93ca63a4efc>:0

  at Oxide.Plugins.Skins.OnItemAddedToContainer (ItemContainer itemContainer, Item item) [0x000a2] in <c8e299658aa244c8aed7c93ca63a4efc>:0

  at Oxide.Plugins.Skins.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x002f3] in <c8e299658aa244c8aed7c93ca63a4efc>:0

  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <60c318df79ed41688ea59335e48d61ad>:0

  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <dfcb48ea05694263bbc08e62a39c274c>:0

  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <dfcb48ea05694263bbc08e62a39c274c>:0

Failed to call hook 'OnItemAddedToContainer' on plugin 'Skins v2.2.2' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.Skins+ContainerController.DrawUI (System.Int32 page) [0x0003f] in :0

  at Oxide.Plugins.Skins+ContainerController.UpdateContent (System.Int32 page) [0x00205] in :0

  at Oxide.Plugins.Skins.OnItemAddedToContainer (ItemContainer itemContainer, Item item) [0x000a2] in :0

  at Oxide.Plugins.Skins.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x002f3] in :0

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

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

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

Good afternoon for some odd reason when attempting to add a skin I get this error thrown in console, does anyone have an idea on what is going wrong?

Failed to call hook 'OnItemAddedToContainer' on plugin 'Skins v2.2.2' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.Skins+ContainerController.DrawUI (System.Int32 page) [0x0003f] in :0 
  at Oxide.Plugins.Skins+ContainerController.UpdateContent (System.Int32 page) [0x00205] in :0 
  at Oxide.Plugins.Skins.OnItemAddedToContainer (ItemContainer itemContainer, Item item) [0x000a2] in :0 
  at Oxide.Plugins.Skins.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x002f3] in :0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in :0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <46ff2b534abb4b35952608167523b7ec>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <46ff2b534abb4b35952608167523b7ec>:0  

Merged post

Righty so it turns out this error is being thrown up because of an invalid shortname, if you open the Skins.json and look at your skins I'm 99.9% sure you'll find an invalid shortname, remove that and reload the plugin and you'll be golden, atlest in my case 🤣