Fatal error: Uncaught Error: Interface "Contao\ManagerPlugin\Config\ConfigPluginInterface" not found in /home/rankting/public_html/ALT/ranketing.de (contao)/vendor/contao/manager-plugin/tests/Fixtures/PluginLoader/FooConfigPlugin.php:18 Stack trace: #0 {main} thrown in /home/rankting/public_html/ALT/ranketing.de (contao)/vendor/contao/manager-plugin/tests/Fixtures/PluginLoader/FooConfigPlugin.php on line 18