Failed to call hook 'OnLoseCondition' on plugin 'XPerience v1.3.7' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.XPerience.OnLoseCondition (Item item, System.Single& amount) [0x0003d] in <7f186ad2cd5549a2b6925753ec8a2cf5>:0
  at Oxide.Plugins.XPerience.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x01e17] in <7f186ad2cd5549a2b6925753ec8a2cf5>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <60c318df79ed41688ea59335e48d61ad>:0
              42kb/s in, 209kb/s out
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <dfcb48ea05694263bbc08e62a39c274c>:0
Failed to call hook 'OnLoseCondition' on plugin 'XPerience v1.3.7' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.XPerience.OnLoseCondition (Item item, System.Single& amount) [0x0003d] in <7f186ad2cd5549a2b6925753ec8a2cf5>:0
  at Oxide.Plugins.XPerience.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x01e17] in <7f186ad2cd5549a2b6925753ec8a2cf5>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <60c318df79ed41688ea59335e48d61ad>:0
              40kb/s in, 201kb/s out
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <dfcb48ea05694263bbc08e62a39c274c>:0

only time this is called is if a player is underwater and is wearing a diving tank and has a fisher skill 1 or higher. I did some tests on my test server and can't get it to error myself but I will continue to see what might have caused this