Fatal error: Uncaught Error: Interface "SimplePie\Cache\NameFilter" not found in /srv/www/htdocs/moodle/lib/simplepie/src/Cache/CallableNameFilter.php:52 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/simplepie/src/Cache/CallableNameFilter.php on line 52