Fatal error: Uncaught Error: Call to undefined function wp_get_additional_image_sizes() in /srv/users/timbedleycom/apps/timbedleycom/public/wp-includes/media.php:63 Stack trace: #0 /srv/users/timbedleycom/apps/timbedleycom/public/wp-includes/media.php(266): image_constrain_size_for_editor(512, 236, 'full') #1 /srv/users/timbedleycom/apps/timbedleycom/public/wp-includes/media.php(953): image_downsize('19', 'full') #2 /srv/users/timbedleycom/apps/timbedleycom/public/wp-content/plugins/wordpress-seo/src/helpers/image-helper.php(103): wp_get_attachment_image_src('19', 'full') #3 /srv/users/timbedleycom/apps/timbedleycom/public/wp-content/plugins/wordpress-seo/src/values/images.php(64): Yoast\WP\SEO\Helpers\Image_Helper->get_attachment_image_source('19', 'full') #4 /srv/users/timbedleycom/apps/timbedleycom/public/wp-content/plugins/wordpress-seo/src/generators/twitter-image-generator.php(76): Yoast\WP\SEO\Values\Images->add_image_by_id('19') #5 /srv/users/timbedleycom/apps/timbedleycom/public/wp-content/plugins/wordpress-seo/s in /srv/users/timbedleycom/apps/timbedleycom/public/wp-includes/media.php on line 63