Как проверить ведьму и не совершить роковых ошибок

Fatal error: Uncaught Error: Call to a member function get_gallery_attachment_ids() on null in /home/web/norny.ru/www/wp-content/themes/betheme/functions/theme-shortcodes.php:1865 Stack trace: #0 /home/web/norny.ru/www/wp-includes/shortcodes.php(356): sc_shop_slider(Array, '', 'shop_slider') #1 [internal function]: do_shortcode_tag(Array) #2 /home/web/norny.ru/www/wp-includes/shortcodes.php(228): preg_replace_callback('/\\[(\\[?)(shop_s...', 'do_shortcode_ta...', '\n<p>\xD0\x92\xD0\xBE \xD0\xBC\xD0\xBD\xD0\xBE...') #3 /home/web/norny.ru/www/wp-includes/class-wp-hook.php(303): do_shortcode('\n<p>\xD0\x92\xD0\xBE \xD0\xBC\xD0\xBD\xD0\xBE...') #4 /home/web/norny.ru/www/wp-includes/plugin.php(189): WP_Hook->apply_filters('\n<p>\xD0\x92\xD0\xBE \xD0\xBC\xD0\xBD\xD0\xBE...', Array) #5 /home/web/norny.ru/www/wp-includes/post-template.php(253): apply_filters('the_content', '<!-- wp:html --...') #6 /home/web/norny.ru/www/wp-content/themes/betheme/functions/builder/class-mfn-builder-front.php(51): the_content() #7 /home/web/norny.r in /home/web/norny.ru/www/wp-content/themes/betheme/functions/theme-shortcodes.php on line 1865