Fatal error: Uncaught Error: Class 'Backend' not found in /home/eberhardschwarze/public_html/vendor/menatwork/contao-matomotrackingtag-bundle/src/Contao/PiwikTrackingTag.php:18
Stack trace:
#0 {main}
thrown in /home/eberhardschwarze/public_html/vendor/menatwork/contao-matomotrackingtag-bundle/src/Contao/PiwikTrackingTag.php on line 18