Failed to call hook 'OnServerInitialized' on plugin 'AdminLogger v2.3.4' (NullReferenceException: Object reference not set to an instance of an object) at Oxide.Plugins.AdminLogger.OnPlayerConnected (BasePlayer player) [0x0000b] in <c722e78a82214b76a679b9b8962e7a3c>:0
at Oxide.Plugins.AdminLogger.OnServerInitialized () [0x00017] in <c722e78a82214b76a679b9b8962e7a3c>:0
at Oxide.Plugins.AdminLogger.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00243] in <c722e78a82214b76a679b9b8962e7a3c>: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 <ec05e0208c9149bba43236ca58fea105>:0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <ec05e0208c9149bba43236ca58fea105>:0

Hi, coud you try removing your config file for this plugin in oxide/config and then reload the plugin?

Let me know if you still have issues.