Woocommerce plugin don't let website load

I am a newbie, trying to convert an old html website into WordPress, as of now keeping most of the part static.
I have installed Woocommerce plugin and when I activate it’s not letting my website load. Website has spinner and it don’t go further and keep showing that spinner.

My php function looks like this

<?php

if ( get_option ('thread_comments') ) {
  wp_enqueue_script('comment-reply');
}

// Bootstrap Menu Support
require_once('wp_bootstrap_navwalker.php');

// Create Nav Menu
add_theme_support( 'menus' );
if (function_exists ('register_nav_menus')) {
  register_nav_menus ( array( 'primary' => 'Header Navigation' ));
}

// Create Post Thumb
if (function_exists ('add_theme_support')) {
  add_theme_support( 'post-thumbnails' );
}

function getPostViews($postID){
    $count_key = 'post_views_count';
    $count = get_post_meta($postID, $count_key, true);
    if($count==''){
        delete_post_meta($postID, $count_key);
        add_post_meta($postID, $count_key, '0');
        return "0 Plays";
    }
    return $count.'';
}
function setPostViews($postID) {
    $count_key = 'post_views_count';
    $count = get_post_meta($postID, $count_key, true);
    if($count==''){
        $count = 0;
        delete_post_meta($postID, $count_key);
        add_post_meta($postID, $count_key, '0');
    }else{
        $count++;
        update_post_meta($postID, $count_key, $count);
    }
}

if (function_exists(register_sidebar)) {
  register_sidebar( array(
      'name' => 'Footer Widgets Left',
      'id' => 'footer-widgets-left',
      'description' => 'Place widgets for the left footer here.',
      'before_widget' => '<div class="span6">',
      'after_widget' => '</div>'
    ));
   register_sidebar( array(
      'name' => 'Footer Widgets Right',
      'id' => 'footer-widgets-right',
      'description' => 'Place widgets for the Right footer here.',
      'before_widget' => '<div class="span3">',
      'after_widget' => '</div>'
    ));
  register_sidebar( array(
      'name' => 'Sidebar Widgets',
      'id' => 'sidebars-widgets',
      'description' => 'Place widgets for the sidebar here.',
      'before_widget' => '<div class="one-third column">',
      'after_widget' => '</div>'
    ));
}

function custom_comments ($comment, $args, $depth) {
  $GLOBALS['comment'] = $comment; ?>
   <li <?php comment_class(); ?> id="li-comment-<?php comment_ID() ?>">
     <div id="comment-<?php comment_ID(); ?>">
      <header class="comment-header">
         <?php echo get_avatar($comment,$size='48',$default='<path_to_url>' ); ?>
         <?php printf(__('<cite class="fn">%s</cite> <span class="says">says:</span>'), get_comment_author_link()) ?>
         <div class="comment-meta commentmetadata"><a>comment_ID ) ) ?>"><?php printf(__('%1$s at %2$s'), get_comment_date(),  get_comment_time()) ?></a><?php edit_comment_link(__('(Edit)'),'  ','') ?></div>
      </header>
      <?php if ($comment->comment_approved == '0') : ?>
         <em><?php _e('Your comment is awaiting moderation.') ?></em>

      <?php endif; ?>

      <?php comment_text() ?>

      <div class="reply">
         <?php comment_reply_link(array_merge( $args, array('depth' => $depth, 'max_depth' => $args['max_depth']))) ?>
      </div>
     </div>
    <?php
}

?>