Fatal error: Uncaught Error: Class 'Contao\ComponentsInstaller\Test\TestCase' not found in /home/eberhardschwarze/public_html/vendor/contao-components/installer/tests/Composer/PluginTest.php:22 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/contao-components/installer/tests/Composer/PluginTest.php on line 22