OnPlayerConnected

Failed to call internal hook 'OnPlayerConnected' on plugin 'ClanCores v2.1.4' [2848347654] (Object reference not set to an instance of an object)
   at void Oxide.Plugins.ClanCores.OnPlayerConnected(BasePlayer player) in /home/container/carbon/plugins/ClanCores.cs:line 1192
   at object Oxide.Plugins.ClanCores.InternalCallHook(uint hook, object[] args) in ClanCores.cs/Internal:line 408

Do you have clans installed?

Changed Status from Pending to Work in Progress

Yes 

Failed to call hook 'OnPlayerConnected' on plugin 'ClanCores v2.1.4' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.ClanCores.OnPlayerConnected (BasePlayer player) [0x00019] in <c51457ec670b4ed3974cc7553d5473b1>:0 
  at Oxide.Plugins.ClanCores.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x013e6] in <c51457ec670b4ed3974cc7553d5473b1>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <42f9bedc659b4f4786eb778d3cd58968>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in <15f61ddda771464d8246ebdce8ff4811>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <15f61ddda771464d8246ebdce8ff4811>:0 

Failed to run a 300.00 timer in 'ClanCores v2.1.4' (ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index)
  at System.Collections.Generic.List`1[T].get_Item (System.Int32 index) [0x00009] in <f98723dd4586469db5213ec59da723ca>:0 
  at Oxide.Plugins.ClanCores.CheckAllClans () [0x0013e] in <c51457ec670b4ed3974cc7553d5473b1>:0 
  at Oxide.Core.Libraries.Timer+TimerInstance.FireCallback () [0x00018] in <15f61ddda771464d8246ebdce8ff4811>:0 
[ez] Galehu10[3421750/76561199275394339] has spawned