The following API calls have changes or have been deprecated. Update accordingly:

(via https://github.com/Gethe/wow-ui-source/blob/beta/Interface/SharedXML/Settings/Blizzard_Deprecated.lua)

• InterfaceOptions_AddCategory
• • Replace with Settings.RegisterAddOnCategory(category)
• InterfaceOptionsFrame_OpenToCategory
• • Replace with Settings.RegisterCanvasLayoutCategory(frame, "Twintop's Resource Bar")
• • Remove fix/override in Init.lua
• • Update slash commands that call it.
• UNIT_AURA
• • Consider refactoring buffs/debuffs to use new partial/full aura update payloads (https://wowpedia.fandom.com/wiki/Patch_10.0.0/API_changes#Unit_Aura_Changes)

InterfaceOptions changes are causing taint errors to appear.

Slash commands still don't work properly but the other large-scale API changes have been accounted for. Closing.