latest update

Failed to call hook 'OnPlayerConnected' on plugin 'UltimateLeaderboard v1.3.7' (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.UltimateLeaderboard+Reward.PlayerConnectedCheck (BasePlayer player) [0x0006c] in <0cb13c927c1e48d1983d6df4f502fb45>:0 
  at Oxide.Plugins.UltimateLeaderboard.OnPlayerConnected (BasePlayer player) [0x0004f] in <0cb13c927c1e48d1983d6df4f502fb45>:0 
  at Oxide.Plugins.UltimateLeaderboard.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00769] in <0cb13c927c1e48d1983d6df4f502fb45>: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 <d59b507fd76240e5b62228d0eae39b73>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <d59b507fd76240e5b62228d0eae39b73>:0 

Most likely, some categories were disabled between the creation of awards and the player's connection.