Fatal error: Uncaught Error: Call to undefined function apply_filters() in C:\xampp\htdocs\wp-content\plugins\advanced-custom-fields\includes\api\api-helpers.php:71 Stack trace: #0 C:\xampp\htdocs\wp-content\plugins\advanced-custom-fields\includes\api\api-helpers.php(54): acf_validate_setting('php_to_js_date_...') #1 C:\xampp\htdocs\wp-content\plugins\advanced-custom-fields\includes\api\api-helpers.php(1873): acf_update_setting('php_to_js_date_...', Array) #2 {main} thrown in C:\xampp\htdocs\wp-content\plugins\advanced-custom-fields\includes\api\api-helpers.php on line 71