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