Could you please follow this form?
- file app/code/Bss/AjaxCart/Controller/Index/Index.php

line 208

$this->urlInterface->getUrl('ajaxcart/index/view', ['id' => $params['id']])
=>
$product->getProductUrl()

- file app/code/Bss/AjaxCart/view/frontend/web/js/ajax.js

function _requestQuickview

_requestQuickview: function (url) {
            $.fancybox.open({
                padding : 0,
                href: url,
                fitToView: false,
                autoSize: false,
                autoWidth: true,
                type: 'iframe',
                helpers: {
                    overlay: {
                        locked: false
                    }
                },
                afterLoad: function () {
                    this.height = $(this.element).data("height");
                    var id = $('.fancybox-type-iframe iframe').prop('id');
                    var height = document.getElementById(id).contentWindow.document.body.scrollHeight + 25;
                    var maxHeight = parseInt($(window).height() * 95 / 100);
                    height = (height > maxHeight) ? maxHeight : height;
                    this.height = height + 'px';
                }
            });
        },
=> 
_requestQuickview: function (url) {
    window.location.href = url;
}