Fatal error: Uncaught Error: Class "Yoast_Form" not found in C:\xampp\htdocs\wordpress\wp-content\plugins\glue-for-yoast-seo-amp\classes\form.php:14 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wordpress\wp-content\plugins\glue-for-yoast-seo-amp\classes\form.php on line 14