【スターバース】シロナの覇気SRは高騰しない！？期待されていたカードなのになぜ・・・

Fatal error: Uncaught Error: Call to undefined function get_field() in /home/tsukudani/rocket-dan.com/public_html/wp-content/themes/swell_child/functions.php:58 Stack trace: #0 /home/tsukudani/rocket-dan.com/public_html/wp-includes/shortcodes.php(433): get_card_info(Array, '', 'card_info') #1 [internal function]: do_shortcode_tag(Array) #2 /home/tsukudani/rocket-dan.com/public_html/wp-includes/shortcodes.php(273): preg_replace_callback('/\\[(\\[?)(card_i...', 'do_shortcode_ta...', '<p>\xE6\x98\x8E\xE6\x97\xA52022\xE5\xB9...') #3 /home/tsukudani/rocket-dan.com/public_html/wp-includes/class-wp-hook.php(324): do_shortcode('<p>\xE6\x98\x8E\xE6\x97\xA52022\xE5\xB9...') #4 /home/tsukudani/rocket-dan.com/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters('<p>\xE6\x98\x8E\xE6\x97\xA52022\xE5\xB9...', Array) #5 /home/tsukudani/rocket-dan.com/public_html/wp-includes/post-template.php(256): apply_filters('the_content', '\xE6\x98\x8E\xE6\x97\xA52022\xE5\xB9\xB41\xE6...') #6 /home/tsukudani/rocket-dan.com/public_html/wp-c in /home/tsukudani/rocket-dan.com/public_html/wp-content/themes/swell_child/functions.php on line 58