Buttons and filter not working after updating to PHP 8 version

Job ID: 35787921

Budget: $30 – $250 USD

When I update our site from PHP 7.4 to 8, there are some problems with our site. I mean, at any product site, when you click the Add to Cart button or checkout button or Place order button, it does not work. The same with our product filter. it does not work. Can anybody help?
Related categories: PHP JavaScript WordPress MySQL WooCommerce