Fatal error: Uncaught Error: Class 'ACF_Field' not found in C:\xampp\htdocs\wp-content\plugins\advanced-custom-fields\includes\fields\class-acf-field-user.php:5 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\advanced-custom-fields\includes\fields\class-acf-field-user.php on line 5