Fatal error: Uncaught Error: Class "OpenSpout\Reader\Exception\ReaderException" not found in /srv/www/htdocs/moodle/lib/openspout/src/Reader/Exception/IteratorNotRewindableException.php:7 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/openspout/src/Reader/Exception/IteratorNotRewindableException.php on line 7