Fatal error: Uncaught Error: Class "Drupal\Tests\BrowserTestBase" not found in /home/intentexperts/public_html/templates/cms/recipes/drupal_cms_case_study/tests/src/Functional/ComponentValidationTest.php:16 Stack trace: #0 {main} thrown in /home/intentexperts/public_html/templates/cms/recipes/drupal_cms_case_study/tests/src/Functional/ComponentValidationTest.php on line 16