the error is related to the kits, as far as I understand from the command line

Could you show me the error?

Failed to call hook 'GiveKit' on plugin 'Kits v4.0.14' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.Kits.GiveKit (BasePlayer player, Oxide.Plugins.Kits+KitData+Kit kit) [0x00000] in <7847454fd6ae453abc5c25071b135076>:0
  at Oxide.Plugins.Kits.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00c62] in <7847454fd6ae453abc5c25071b135076>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <60c318df79ed41688ea59335e48d61ad>:0
                                                            4kb/s in, 20kb/s out
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <9882f28dc2204b4dba514a9ad18f5042>:0
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <9882f28dc2204b4dba514a9ad18f5042>:0

Just released a new version, try that and let me know.

the error no longer appears. but so far I have not seen the scarecrow ).

They don't appear to me either.

the scarecrow appears for 1-5 seconds and disappears

The same happens to me.