NullReferenceException at OnPlayerConnected/DisconnectedError

hello, i have an issue with Rustcord.
bot is going offline and i have a 

Failed to call hook 'OnPlayerConnected 
Failed to call hook 'OnPlayerDisconnected'

https://hastebin.com/fugatozifo.sql

Hi! Got this error

Failed to call hook 'OnPlayerConnected' on plugin 'Rustcord v2.5.2' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.Rustcord.OnPlayerConnected (BasePlayer player) [0x00034] in <67a9524d5d954ae8937bead1ce5113d2>:0 
  at Oxide.Plugins.Rustcord.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x003f0] in <67a9524d5d954ae8937bead1ce5113d2>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <80b90e8213db44b29ec2d4111764172c>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in :0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in :0​