WP Bootstrap Navwalker移动菜单不起作用

Question

I am using the WP bootstrap navwalker for my wordpress site. The desktop version of the menu is working properly but there's some problem with the hamburger menu. The hamburger menu is showing up but the collapse thing is not working. Here's my Navwalker Menu:

    <nav class="navbar navbar-expand-lg navbar-light bg-color">
  <button class="navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
    <span>   
    <i class="fas fa-bars"></i>
    </span>
  </button>

  <div class="collapse navbar-collapse" id="navbarSupportedContent">
    <ul class="navbar-nav mx-auto">
    <?php
      wp_nav_menu( array(
    'theme_location'  => 'primary',
    'depth'           => 2, // 1 = no dropdowns, 2 = with dropdowns.
    'container'       => 'div',
    'container_class' => 'collapse navbar-collapse',
    'container_id'    => 'bs-example-navbar-collapse-1',
    'menu_class'      => 'navbar-nav mr-auto',
    'fallback_cb'     => 'WP_Bootstrap_Navwalker::fallback',
    'walker'          => new WP_Bootstrap_Navwalker(),
) );
    ?>
    </ul>

  </div>

</nav>

and here's my enqueued scripts:

//Register WP NAVWALKER
    require_once('wp-bootstrap-navwalker.php');

    //Theme Support
    function wpb_theme_setup(){
        //NAV Menus
        register_nav_menus(array(
            'primary' =>__('Primary Menu')
        ));

        //CSS Files
        wp_enqueue_style('font-awesome', '//use.fontawesome.com/releases/v5.5.0/css/all.css');

        wp_enqueue_style('bootstrap', '//stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css');

        wp_enqueue_style('owl-carasoul', '//cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/assets/owl.carousel.css');

        wp_enqueue_style( 'baguette-box', '//cdnjs.cloudflare.com/ajax/libs/baguettebox.js/1.10.0/baguetteBox.min.css');

        wp_enqueue_style('main-css', get_stylesheet_uri(), NULL, microtime(), false);


        //Scripts 

        wp_enqueue_script('jquery', '//cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js', NULL,'1.0', false);

        wp_enqueue_script('owl', '//cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/owl.carousel.min.js', NULL, '1.0', true);

        wp_enqueue_script('bootstrap-js', '//stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js', NULL, '4.1.3', true);

        wp_enqueue_script('baguette-js', '//cdnjs.cloudflare.com/ajax/libs/baguettebox.js/1.10.0/baguetteBox.min.js', NULL, '1.10.0', false);

    }

    add_action('after_setup_theme', 'wpb_theme_setup');