Warning: Class 'Drupal\Core\Http\KernelEvent' not found in /app/docroot/core/includes/bootstrap.inc on line 134

Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in /app/docroot/core/lib/Drupal/Core/DrupalKernel.php on line 999

Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in /app/docroot/core/lib/Drupal/Core/DrupalKernel.php on line 1000

Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in /app/docroot/core/lib/Drupal/Core/DrupalKernel.php on line 1001

Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in /app/docroot/core/lib/Drupal/Core/DrupalKernel.php on line 1004

Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in /app/docroot/core/lib/Drupal/Core/DrupalKernel.php on line 1006

Fatal error: Uncaught Error: Class 'Drupal\Core\Installer\InstallerKernel' not found in /app/docroot/core/includes/errors.inc:315 Stack trace: #0 /app/docroot/core/includes/errors.inc(123): _drupal_get_error_level() #1 /app/docroot/core/includes/bootstrap.inc(384): error_displayable() #2 /app/docroot/core/includes/bootstrap.inc(368): _drupal_exception_handler_additional(Object(Error), Object(Error)) #3 [internal function]: _drupal_exception_handler(Object(Error)) #4 {main} thrown in /app/docroot/core/includes/errors.inc on line 315