Fatal error: Uncaught Error: Class "Drupal\Tests\BrowserTestBase" not found in /home/drupalshareacopy/public_html/cms/recipes/drupal_cms_search/tests/src/Functional/ContentVisibilityTest.php:17 Stack trace: #0 {main} thrown in /home/drupalshareacopy/public_html/cms/recipes/drupal_cms_search/tests/src/Functional/ContentVisibilityTest.php on line 17