Fatal error: Uncaught Error: Interface "Symfony\Component\HttpKernel\HttpKernelInterface" not found in /usr/www/users/homemu/homematic-ip.com/web/core/lib/Drupal/Core/DrupalKernelInterface.php:15 Stack trace: #0 /usr/www/users/homemu/homematic-ip.com/vendor/composer/ClassLoader.php(576): include() #1 /usr/www/users/homemu/homematic-ip.com/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}() #2 /usr/www/users/homemu/homematic-ip.com/web/core/lib/Drupal/Core/DrupalKernel.php(48): Composer\Autoload\ClassLoader->loadClass() #3 /usr/www/users/homemu/homematic-ip.com/vendor/composer/ClassLoader.php(576): include('/usr/www/users/...') #4 /usr/www/users/homemu/homematic-ip.com/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}() #5 /usr/www/users/homemu/homematic-ip.com/web/index.php(16): Composer\Autoload\ClassLoader->loadClass() #6 {main} thrown in /usr/www/users/homemu/homematic-ip.com/web/core/lib/Drupal/Core/DrupalKernelInterface.php on line 15