Yeah, Bugeater will suppress the error messages, so you might not see all of them in the order that they occur. So disable it and see ALL error messages. And about the message above you have posted it says
user:/AddOns/AutoInvite
So you addon AutoInvite causes this or at least is involved. Check if there is any update or check the comments of that addon for a fix.
About the libraries: There are several posts and threads about libraries in subfolders of old addons already, like the latest one here:
https://www.esoui.com/forums/showthread.php?t=9927
So you can/should also check the subfolders for old libraris, remove them, or find replacement addons for these addons which are old and use such libs from subfolders, or which just throw error messages ingame.