Failed to call hook commandhandler

Failed to call hook 'CommandHandler' on plugin 'Birthdays v1.0.1' (IndexOutOfRangeException: Index was outside the bounds of the array.)
  at Oxide.Plugins.Birthdays.CommandHandler (BasePlayer player, System.String command, System.String[] args) [0x0000c] in <751c6ecf54c14448bc8760763beb7604>:0 
  at Oxide.Plugins.Birthdays.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x0019a] in <751c6ecf54c14448bc8760763beb7604>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <31122a27a2414cd799150f8677cf39d4>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <0fbce81d88d64454b3e7abb24df7026b>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <0fbce81d88d64454b3e7abb24df7026b>:0

Getting this in console when players try to claim their birthday present

Disregard, the claim command was not the correct one typed in chat

Changed Status from Pending to Closed