Fatal error: Uncaught Error: Call to undefined function DI\decorate() in /usr/home/mw2p5ujyzt/www/htdocs/mode2_piwik/config/environment/ui-test.php:13 Stack trace: #0 {main} thrown in /usr/home/mw2p5ujyzt/www/htdocs/mode2_piwik/config/environment/ui-test.php on line 13