browsersync doesn't work with XAMPP

php windows gulp xampp

PHP Snippet 1:

gulp.task('browser-sync', function() {

   browserSync.init({
      proxy: "http://localhost:80/dashboard/optimizedphp/app/"
   })
;});

PHP Snippet 2:

browserSync( {
    proxy: "https://localhost/mysite/",
    https: {
        key: "W:/xampp/htdocs/mkcert/localhost/localhost.key",
        cert: "W:/xampp/htdocs/mkcert/localhost/localhost.crt"
    }
});