Faild to call Hook OnEntityTakeDamage wenn a Bot attacks a HumanNPC

Hello

Here are the corresponding Plugins:

HumanNPC 0.3.54
BotReSpawn V1.0.6

I got this error when a Bot attacks a HumanNPC

(15:03:52) | Failed to call hook 'OnEntityTakeDamage' on plugin 'HumanNPC v0.3.54' (InvalidCastException: Specified cast is not valid.)
  at Oxide.Plugins.HumanNPC.OnEntityTakeDamage (BaseCombatEntity entity, HitInfo hitinfo) [0x000b9] in <ff15a12ba46b419db9ba91e27b8b3b8a>:0 
  at Oxide.Plugins.HumanNPC.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00bbf] in <ff15a12ba46b419db9ba91e27b8b3b8a>: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

Well finally the Bot killed the HumanNPC.....

just for information.