Hello everybody
who will help with this

Failed to call hook 'OnEntitySpawned' on plugin 'BotSpawn v1.9.74' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.BotSpawn.OnEntitySpawned (BaseEntity entity) [0x00048] in <1b072232a1a940c997fe8d91a6a2cdd4>:0
  at Oxide.Plugins.BotSpawn.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00413] in <1b072232a1a940c997fe8d91a6a2cdd4>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <33f7c42a56934dae8ec04b11017dce31>:0
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <b0a93b504f034a0db8b1c3d2503c0987>:0
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <b0a93b504f034a0db8b1c3d2503c0987>:0

This plugin is not on umod and you should contact its author. Something is null in the plugin in the hook mentioned and you should check if it is or get it in a different way.