Failed to call hook 'OnServerInitialized' on plugin 'InfoPanel v1.0.6' 
(ArgumentOutOfRangeException: Index was out of range. Must be 
non-negative and less than the size of the collection.
Parameter name: index)
  at System.ThrowHelper.ThrowArgumentOutOfRangeException 
(System.ExceptionArgument argument, System.ExceptionResource resource) 
[0x00029] in :0

  at System.ThrowHelper.ThrowArgumentOutOfRangeException () [0x00000] in :0

  at Oxide.Plugins.InfoPanel.InitializeGUI (BasePlayer player) [0x001f3] in <6b21a69baf634ace87ea572c03b5411e>:0

  at Oxide.Plugins.InfoPanel.OnServerInitialized () [0x00172] in <6b21a69baf634ace87ea572c03b5411e>:0

  at Oxide.Plugins.InfoPanel.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x0046e] in <6b21a69baf634ace87ea572c03b5411e>:0

  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <60c318df79ed41688ea59335e48d61ad>:0

  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

remove plugin files config, data and lang then reinstall it,  It has been working 100% for several years on my server