Additional uncaught exception thrown while handling exception.

Original

Error: Class "Symfony\Component\HttpFoundation\Response" not found in include() (line 21 of /home/airbest/public_html/docroot/core/lib/Drupal/Core/Form/EnforcedResponse.php).

include() (Line: 576)
Composer\Autoload\{closure}('/home/airbest/public_html/vendor/composer/../../docroot/core/lib/Drupal/Core/Form/EnforcedResponse.php') (Line: 427)
Composer\Autoload\ClassLoader->loadClass('Drupal\Core\Form\EnforcedResponse') (Line: 20)
Drupal\Core\EventSubscriber\EnforcedFormResponseSubscriber->onKernelException(Object, 'kernel.exception', Object)
call_user_func(Array, Object, 'kernel.exception', Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.exception') (Line: 239)
Symfony\Component\HttpKernel\HttpKernel->handleThrowable(Object, Object, 1) (Line: 91)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 53)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 741)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

Additional

Error: Class "Symfony\Component\HttpFoundation\Response" not found in _drupal_log_error() (line 165 of /home/airbest/public_html/docroot/core/includes/errors.inc).

_drupal_log_error(Array, 1) (Line: 184)
_drupal_exception_handler(Object)