Unable to view/alter 'general' or 'filter' settings (Srendarr - Aura, Buff & Debuff Tracker)

user:/AddOns/MXPV/Libs/LibAddonMenu-2.0/controls/submenu.lua:107: attempt to index a nil valuestack traceback:user:/AddOns/MXPV/Libs/LibAddonMenu-2.0/controls/submenu.lua:107: in function...