Fatal error: Uncaught Error: Interface "Symfony\Component\HttpKernel\HttpKernelInterface" not found in /customers/0/8/f/verzamelaarke.be/httpd.www/core/lib/Drupal/Core/DrupalKernelInterface.php:15
Stack trace:
#0 /customers/0/8/f/verzamelaarke.be/httpd.www/vendor/composer/ClassLoader.php(571): include()
#1 /customers/0/8/f/verzamelaarke.be/httpd.www/vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile('/customers/0/8/...')
#2 /customers/0/8/f/verzamelaarke.be/httpd.www/core/lib/Drupal/Core/DrupalKernel.php(48): Composer\Autoload\ClassLoader->loadClass('Drupal\\Core\\Dru...')
#3 /customers/0/8/f/verzamelaarke.be/httpd.www/vendor/composer/ClassLoader.php(571): include('/customers/0/8/...')
#4 /customers/0/8/f/verzamelaarke.be/httpd.www/vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile('/customers/0/8/...')
#5 /customers/0/8/f/verzamelaarke.be/httpd.www/index.php(16): Composer\Autoload\ClassLoader->loadClass('Drupal\\Core\\Dru...')
#6 {main}
  thrown in /customers/0/8/f/verzamelaarke.be/httpd.www/core/lib/Drupal/Core/DrupalKernelInterface.php on line 15