I can't be sure if this is an issue with Handy Notes - Legion Mage Portals or with Carbonite Notes. Here is the LUA error that is being reported by Bug Sack & Bug Grabber this is for the retail version of the game, ver 11.0.2 - 8/21/24 and using Carbonite Notes version 11.0.2 - 7/26/24.

This error occurs on initial load of the game on logon.

2x ...faceHandyNotes_LegionMagePortals/handler.lua:175: bad argument #1 to 'gsub' (string expected, got nil)
[string "=[C]"]: in function gsub' [string "@HandyNotes_LegionMagePortals/handler.lua"]:175: in function GetNodes'
[string "@Carbonite.Notes/NxFav.lua"]:1538: in function HandyNotes' [string "@Carbonite.Notes/NxFav.lua"]:1518: in function UpdateIcons'
[string "@Carbonite/NxMap.lua"]:5047: in function Update' [string "@Carbonite/NxMap.lua"]:4017: in function OnUpdate'
[string "@Carbonite/NxMap.lua"]:1423: in function MainOnUpdate' [string "@Carbonite/Carbonite.lua"]:1458: in function NXOnUpdate'
[string "*Carbonite.xml:16_OnUpdate"]:1: in function <[string "*Carbonite.xml:16_OnUpdate"]:1>

Locals:
(*temporary) = nil
(*temporary) = "_terrain%d+$"
(*temporary) = ""
(*temporary) = "string expected, got nil"