error code

Failed to call hook 'OnPlayerConnected' on plugin 'WelcomePanel v4.3.6' (KeyNotFoundException: The given key '1' was not present in the dictionary.)
  at System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey key) [0x0001e] in <f98723dd4586469db5213ec59da723ca>:0 
  at Oxide.Plugins.WelcomePanel.OpenTab (BasePlayer player, System.Int32 tab) [0x0023b] in <c47caf93e5f2400ba80f73e67220bd65>:0 
  at Oxide.Plugins.WelcomePanel.OnPlayerConnected (BasePlayer player) [0x0007c] in <c47caf93e5f2400ba80f73e67220bd65>:0 
  at Oxide.Plugins.WelcomePanel.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00191] in <c47caf93e5f2400ba80f73e67220bd65>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <206a0f2c6ee141f38e2ad549cde44d70>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in <beb2b64691c64e2b95b99491bd85442c>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <beb2b64691c64e2b95b99491bd85442c>:0 

Please attach your config file as well with your ticket.