Update break site

Hi there, i tried to update from 7.1.1 to 7.3.1 .. i did copy all sass and js files.. but few bugs appears...

• Parallax stop working (image is not showing at all)

• I got Uncaught (in promise) TypeError: menuHoverDelay.split is not a function at _hover (menus.js:227:29) at Object.init (menus.js:547:4) at functions.js:728:27

Any idea how to fix this