Fatal error: Uncaught Error: Call to a member function set_page_parent() on null
in /home/user2098248/www/belpg.by/wp-content/themes/promgroup/inc/carbon_custom.php on line 114

Call stack:

1. crb_attach_theme_options()
   wp-includes/class-wp-hook.php:308
2. WP_Hook::apply_filters()
   wp-includes/class-wp-hook.php:332
3. WP_Hook::do_action()
   wp-includes/plugin.php:517
4. do_action()
   wp-content/plugins/carbon-fields/vendor/htmlburger/carbon-fields/core/Loader/Loader.php:112
5. Carbon_Fields\Loader\Loader::trigger_fields_register()
   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-settings.php:617
9. require_once()
   wp-config.php:97
10. require_once()
    wp-load.php:50
11. require_once()
    wp-blog-header.php:13
12. require()
    index.php:17