Frontity Site Does not work with Sub directory WordPress Site to display posts by category or tags

Hello,
I have installed WordPress site with given path: http://localhost/sites/wordpress/.
And i have frontity site in given path: http://localhost:3000

I set WordPress URLs in frontity.setting.js like below:

const settings = {
  name: "frontity-search",
  state: {
    frontity: {
      url: "http://localhost/sites/wordpress",
      title: "Test Frontity Blog",
      description: "WordPress installation for Frontity development",
    },
  },
  packages: [
    {
      name: "@frontity/twentytwenty-theme",
      state: {
        theme: {
          menu: [
            ["Home", "/"],
            ["Blog", "/category/fruits/"],
            ["Classic", "/category/classic/"],
            ["Markup", "/category/markup/"],
          ],
          featured: {
            showOnList: false,
            showOnPost: false,
          },
        },
      },
    },
    {
      name: "@frontity/wp-source",
      state: {
        source: {
          api: "http://localhost/sites/wordpress/wp-json",
        },
      },
    },
    "@frontity/tiny-router",
    "@frontity/html2react",
  ],
};

export default settings;

When i visit below url then it shows 404 page.
http://localhost:3000/category/fruits/

If i convert my Wordpress URL like: http://localhost:10001 using virtual host then it is working.

It seems frontity does not show posts by category having sub directory wordpress site.

Also, one more thing i want custom filter with form to filter post by custom field how it can be done?

Let me know if you get any ans.
Thanks.