Fatal error: Uncaught Error: Interface "DeviceDetector\Yaml\Parser" not found in /usr/home/mw2p5ujyzt/www/htdocs/mode2_piwik/vendor/piwik/device-detector/Yaml/Symfony.php:13
Stack trace:
#0 {main}
thrown in /usr/home/mw2p5ujyzt/www/htdocs/mode2_piwik/vendor/piwik/device-detector/Yaml/Symfony.php on line 13