Was having an issue with one of my addons, done some trouble shooting, decided to repair the game and run it fresh with zero addons and when I opened my mailbox I got an error.
https://imgur.com/a/iRag84o
I can scroll down for you naysayers showing I am running no addons.
Because many UI elements, even stock ones, are Addons, as you can see from the error message.
And those addons interact with others you might have installed, even if disabled.
As a matter of fact, using an addon (Warmup) to measure loading screen times, I had one official addon (Blizzard Battleground Map) take over 30s to load.
Generally speaking, this usually means that there’s still some element of that addon left behind that is causing an issue. That said, it could also be that something has lead to your standard UI (addons disabled) that is still causing an error.
Simply turning off the error message won’t actually “fix” anything. If you’re not running any addons currently, then the most efficient way to reset everything to stock (and almost certainly correct the error) is to complete a Full UI Reset.
It involves renaming some folders so that your game recreates fresh ones and once complete there should be zero addons installed and the UI should be completely stock.
It’s not the same as any console command either. Follow the steps linked (simply rename 3 folders) and see if the LUA message continues.
That’s so dumb. Turn off addons, get error, get told I need to turn them off harder, realise I don’t even use an addon that interacts with or changes the mailbox.
Game needs to be fixed, it’s been getting worse recently.
It was already explained that disabling the addon while troubleshooting may not fix the particular error. A UI reset takes 5 minutes. Go try it instead of rejecting the troubleshooting advice people are giving you.
However, if you’re just here to complain and not actually fix things, go ahead and update your OP to state as much so people dont make the mistake of trying to help you.