Fatal error: Uncaught Error: Interface "SimplePie\RegistryAware" not found in /home/pacs/vcg00/users/compgen.de/wordpress/wp-includes/SimplePie/src/Locator.php:55 Stack trace: #0 {main} thrown in /home/pacs/vcg00/users/compgen.de/wordpress/wp-includes/SimplePie/src/Locator.php on line 55