Menu dropdown works once after loading page, but then stops working.
This is a WordPress site, version of WordPress is 5.8. Vertex framework has been updated to version 4.1.2
Theme installed is Charity. I can see some error messages concerning jquery when dropdown stops working:
jquery.min.js?ver=3.6.0:2 Uncaught TypeError: Cannot create property 'guid' on boolean 'true'
at Object.add (jquery.min.js?ver=3.6.0:2)
at Object.s.event.add (jquery-migrate.min.js?ver=3.3.2:2)
at HTMLUListElement.<anonymous> (jquery.min.js?ver=3.6.0:2)
at Function.each (jquery.min.js?ver=3.6.0:2)
at s.fn.init.each (jquery.min.js?ver=3.6.0:2)
at Ee (jquery.min.js?ver=3.6.0:2)
at Ee (jquery.min.js?ver=3.6.0:2)
at s.fn.init.on (jquery.min.js?ver=3.6.0:2)
at s.fn.init.bind (jquery-migrate.min.js?ver=3.3.2:2)
at t.hideSubMenu (s5_flex_menu-min.js:1)
Please advice me how to repair this menu.