PHP:
Fatal error: Uncaught Error: Interface "SimplePie\RegistryAware" not found in /www/habi.gna.ch/doc/wp-includes/SimplePie/src/Locator.php:55 Stack trace: #0 {main} thrown in /www/habi.gna.ch/doc/wp-includes/SimplePie/src/Locator.php on line 55