Fatal error: Uncaught Error: Class "Piwik\Plugin\Visualization" not found in /usr/home/mw2p5ujyzt/www/htdocs/mode2_piwik/plugins/CoreVisualizations/Visualizations/Graph.php:29
Stack trace:
#0 {main}
thrown in /usr/home/mw2p5ujyzt/www/htdocs/mode2_piwik/plugins/CoreVisualizations/Visualizations/Graph.php on line 29