Additional uncaught exception thrown while handling exception.

Original

Error: Class "Symfony\Component\DependencyInjection\Compiler\CheckExceptionOnInvalidReferenceBehaviorPass" not found in Symfony\Component\DependencyInjection\Compiler\PassConfig->__construct() (line 87 of /home/verkopenbelgie/public_html/vendor/symfony/dependency-injection/Compiler/PassConfig.php).

Symfony\Component\DependencyInjection\Compiler\PassConfig->__construct() (Line: 30)
Symfony\Component\DependencyInjection\Compiler\Compiler->__construct() (Line: 477)
Symfony\Component\DependencyInjection\ContainerBuilder->getCompiler() (Line: 457)
Symfony\Component\DependencyInjection\ContainerBuilder->addCompilerPass() (Line: 60)
Drupal\Core\CoreServiceProvider->register() (Line: 1305)
Drupal\Core\DrupalKernel->compileContainer() (Line: 934)
Drupal\Core\DrupalKernel->initializeContainer() (Line: 20)
Drupal\Core\Installer\InstallerKernel->initializeContainer() (Line: 494)
Drupal\Core\DrupalKernel->boot() (Line: 424)
install_begin_request() (Line: 116)
install_drupal() (Line: 48)

Additional

Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException: You have requested a non-existent service "theme.manager". in Symfony\Component\DependencyInjection\ContainerBuilder->getDefinition() (line 992 of /home/verkopenbelgie/public_html/vendor/symfony/dependency-injection/ContainerBuilder.php).

Symfony\Component\DependencyInjection\ContainerBuilder->getDefinition() (Line: 568)
Symfony\Component\DependencyInjection\ContainerBuilder->doGet() (Line: 531)
Symfony\Component\DependencyInjection\ContainerBuilder->get() (Line: 649)
Drupal::theme() (Line: 22)
_drupal_maintenance_theme() (Line: 322)
drupal_maintenance_theme() (Line: 1023)
install_display_output() (Line: 271)
_drupal_log_error() (Line: 182)
_drupal_exception_handler()