Warning: Attempt to read property "headers" on array in Drupal\dynamic_page_cache\EventSubscriber\DynamicPageCacheSubscriber->onRequest() (line 145 of core/modules/dynamic_page_cache/src/EventSubscriber/DynamicPageCacheSubscriber.php).
Warning: Attempt to read property "headers" on array in Drupal\dynamic_page_cache\EventSubscriber\DynamicPageCacheSubscriber->onRequest() (line 145 of core/modules/dynamic_page_cache/src/EventSubscriber/DynamicPageCacheSubscriber.php).