Warning: require_once(/var/www/sites/mediawiki/extensions/SubPageList/Tests/../vendor/autoload.php): failed to open stream: No such file or directory in /var/www/sites/mediawiki/extensions/SubPageList/Tests/bootstrap.php on line 18

Fatal error: require_once(): Failed opening required '/var/www/sites/mediawiki/extensions/SubPageList/Tests/../vendor/autoload.php' (include_path='.:/opt/remi/php54/root/usr/share/pear:/opt/remi/php54/root/usr/share/php:/usr/share/pear:/usr/share/php') in /var/www/sites/mediawiki/extensions/SubPageList/Tests/bootstrap.php on line 18