Failed to call hook

Failed to call hook 'OnEntityTakeDamage' on plugin 'BossMonster v2.1.3' (NullReferenceException: Object reference not set to an instance of an object)
at Oxide.Plugins.BossMonster.OnEntityTakeDamage (ScientistNPC entity, HitInfo info) [0x000a4] in <d89adb43fce54c069e139a527fe06647>:0
at Oxide.Plugins.BossMonster.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00998] in <d89adb43fce54c069e139a527fe06647>:0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <795304323ac74a298b8ed190a1dfa739>:0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in <beb2b64691c64e2b95b99491bd85442c>:0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <beb2b64691c64e2b95b99491bd85442c>:0


This is what i get since the update, when someone is attacking the NPCS and i have the same porblem with loot and name on the map.

11 hours ago, ShiiZo said:

This is what i get since the update, when someone is attacking the NPCS and i have the same porblem with loot and name on the map.

Update NpcSpawn to the most recent version and you should be good to go. Let me know if you have any issue after updating NpcSpawn.