Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in /var/www/illumine/vendor/sabre/dav/tests/Sabre/CalDAV/Schedule/IMipPluginTest.php:9 Stack trace: #0 {main} thrown in /var/www/illumine/vendor/sabre/dav/tests/Sabre/CalDAV/Schedule/IMipPluginTest.php on line 9