OnEntityKill After Update

Failed to call hook 'OnEntityKill' on plugin 'MyMiniCopter v0.3.0' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.MyMiniCopter.OnEntityKill (BaseNetworkable entity) [0x0000d] in <756839f7a35c4ee88d165376ab5d2648>:0 
  at Oxide.Plugins.MyMiniCopter.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x001e6] in <756839f7a35c4ee88d165376ab5d2648>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <d09a1f46ca2f4432811bcfe45ad13c7b>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <cf88a28c7fb44d36890d85a78331cc9d>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <cf88a28c7fb44d36890d85a78331cc9d>:0 

19:52 [Error] Failed to call hook 'OnEntityKill' on plugin 'MyMiniCopter v0.3.0' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.MyMiniCopter.OnEntityKill (BaseNetworkable entity) [0x0000d] in <756839f7a35c4ee88d165376ab5d2648>:0 
  at Oxide.Plugins.MyMiniCopter.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x001e6] in <756839f7a35c4ee88d165376ab5d2648>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <d09a1f46ca2f4432811bcfe45ad13c7b>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <cf88a28c7fb44d36890d85a78331cc9d>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <cf88a28c7fb44d36890d85a78331cc9d>:0 

This literally kicked everyone out of the server....How can i fix it.

Changed Status from Pending to Closed