WordPress does not load jQuery

I forgot to add a default case to the switch…case statement of my add_script_attributes function in the functions.php file. Sorry that I did not see this before.

From my functions.php:

function add_script_attributes($tag, $handle) {
    switch($handle) {
        case "Popper":
            return str_replace("src="https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js"", "src="https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js" integrity='sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo' crossorigin='anonymous'", $tag);
        case "Bootstrap":
            return str_replace("src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"", "src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js" integrity='sha384-OgVRvuATP1z7JjHLkuOU7Xw704+h835Lr+6QL9UvYjZE3Ipu6Tp75j7Bh/kR0JKI' crossorigin='anonymous'", $tag);
        default:
            return $tag;
    }
}
add_filter('script_loader_tag', 'add_script_attributes', 10, 2);