Fatal error: Uncaught Error: Call to undefined function add_action() in /nfs/aesop1/hw00/d34/acesche/wordpress/wp-content/plugins/pdf-embedder/requirements.php:8 Stack trace: #0 {main} thrown in /nfs/aesop1/hw00/d34/acesche/wordpress/wp-content/plugins/pdf-embedder/requirements.php on line 8