Also getting this error:

Failed to call hook 'OnUserGroupAdded' on plugin 'DiscordCoreRoles v1.2.2' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.DiscordCoreRoles.HandleUserConnected 
(Oxide.Core.Libraries.Covalence.IPlayer player, System.String discordId, System.Boolean isLeaving) [0x00011] in 
<901a61d870b149178ca32535d8b4480b>:0
  at Oxide.Plugins.DiscordCoreRoles.OnUserGroupAdded (System.String id, 
System.String groupName) [0x00012] in <901a61d870b149178ca32535d8b4480b>:0
  at Oxide.Plugins.DiscordCoreRoles.DirectCallHook (System.String name, 
System.Object& ret, System.Object[] args) [0x00362] in <901a61d870b149178ca32535d8b4480b>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod 
(Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in :0
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in :0
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in :0