Expected behavior Parralax not working even I copy the file from mdb editor https://mdbootstrap.com/snippets/jquery/dcoderk/440685

how can i make it work do i need to add this js file? if so where and how?

// object-fit polyfill run

objectFitImages();

/* init Jarallax */ jarallax(document.querySelectorAll('.jarallax'));

jarallax(document.querySelectorAll('.jarallax-keep-img'), { keepImg: true, });

Actual behavior

Resources (screenshots, code snippets etc.)