Fatal Error

I am running Pinterest for Woocommerce ver 1.2.13 and following fatal error has appeared in my log just recently:

Fatal error: Uncaught Error: Call to a member function display_prices_including_tax() on null in /wp-content/plugins/pinterest-for-woocommerce/src/Tracking.php:728

Stack Trace

1. 
   Automattic\WooCommerce\Pinterest\Tracking::get_product_display_price()
   /wp-content/plugins/pinterest-for-woocommerce/src/Tracking.php:658
2. 
   Automattic\WooCommerce\Pinterest\Tracking::filter_add_to_cart_attributes()
   /wp-includes/class-wp-hook.php:308
3. 
   WP_Hook->apply_filters()
   /wp-includes/plugin.php:205
4. 
   apply_filters()
   /wp-content/plugins/woocommerce/includes/wc-template-functions.php:1369
5. 
   woocommerce_template_loop_add_to_cart()
   /wp-includes/class-wp-hook.php:308
6. 
   WP_Hook->apply_filters()
   /wp-includes/class-wp-hook.php:332
7. 
   WP_Hook->do_action()
   /wp-includes/plugin.php:517
8. 
   do_action()
   /wp-content/themes/woodmart/woocommerce/content-product-info-alt.php:60
9. 
   require(‘/home/***/…’)
   /wp-includes/template.php:785
10. 
    load_template()
    /wp-content/plugins/woocommerce/includes/wc-core-functions.php:284
11. 
    wc_get_template_part()
    /wp-content/themes/woodmart/woocommerce/content-product.php:149
12. 
    require(‘/home/***/…’)
    /wp-includes/template.php:785
13. 
    load_template()
    /wp-content/plugins/woocommerce/includes/wc-core-functions.php:284
14. 
    wc_get_template_part()
    /wp-content/themes/woodmart/inc/shortcodes/products.php:484
15. 
    woodmart_shortcode_products()
    /wp-includes/shortcodes.php:355
16. 
    do_shortcode_tag()
17. 
    preg_replace_callback()
    /wp-includes/shortcodes.php:227
18. 
    do_shortcode()
    /wp-includes/class-wp-hook.php:308
19. 
    WP_Hook->apply_filters()
    /wp-includes/plugin.php:205
20. 
    apply_filters()
    /wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php:1857
21. 
    WP_REST_Posts_Controller->prepare_item_for_response()
    /wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php:384
22. 
    WP_REST_Posts_Controller->get_items()
    /wp-includes/rest-api/class-wp-rest-server.php:1171
23. 
    WP_REST_Server->respond_to_request()
    /wp-includes/rest-api/class-wp-rest-server.php:1018
24. 
    WP_REST_Server->dispatch()
    /wp-includes/rest-api/class-wp-rest-server.php:442
25. 
    WP_REST_Server->serve_request()
    /wp-includes/rest-api.php:410
26. 
    rest_api_loaded()
    /wp-includes/class-wp-hook.php:308
27. 
    WP_Hook->apply_filters()
    /wp-includes/class-wp-hook.php:332
28. 
    WP_Hook->do_action()
    /wp-includes/plugin.php:565
29. 
    do_action_ref_array()
    /wp-includes/class-wp.php:399
30. 
    WP->parse_request()
    /wp-includes/class-wp.php:780
31. 
    WP->main()
    /wp-includes/functions.php:1332
32. 
    wp()
    /wp-blog-header.php:16
33. 
    require(‘/home/***/…’)
    /index.php:17
34. 
    {main}
    thrown in /wp-content/plugins/pinterest-for-woocommerce/src/Tracking.php on line 728