Fatal error: Uncaught Error: Call to undefined function acf_prepare_field_group_for_import() in /var/www/public/wp-content/plugins/advanced-custom-fields/includes/local-fields.php:172 Stack trace: #0 /var/www/public/wp-content/plugins/advanced-custom-fields/includes/local-fields.php(201): acf_add_local_field_group(Array) #1 /var/www/public/wp-content/plugins/footballwhispers/includes/post-custom-fields.php(9): register_field_group(Array) #2 /var/www/public/wp-content/plugins/footballwhispers/footballwhispers.php(38): require('/var/www/public...') #3 /var/www/public/wordpress/wp-settings.php(377): include_once('/var/www/public...') #4 /var/www/public/wp-config.php(125): require_once('/var/www/public...') #5 /var/www/public/wordpress/wp-load.php(42): require_once('/var/www/public...') #6 /var/www/public/wordpress/wp-blog-header.php(13): require_once('/var/www/public...') #7 /var/www/public/wordpress/index.php(17): require('/var/www/public...') #8 {main} thrown in /var/www/public/wp-content/plugins/advanced-custom-fields/includes/local-fields.php on line 172