Fatal error: Uncaught Error: Call to undefined function get_option() in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/pdf-viewer-for-wordpress/admin/options.php:66 Stack trace: #0 {main} thrown in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/pdf-viewer-for-wordpress/admin/options.php on line 66