Fatal error: Uncaught Error: Class "Drupal\navigation\TopBarItemBase" not found in /home/qcsvlel/www/core/modules/navigation/tests/navigation_test/src/Plugin/TopBarItem/TopBarItemInstantiation.php:20 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/modules/navigation/tests/navigation_test/src/Plugin/TopBarItem/TopBarItemInstantiation.php on line 20