Fatal error: Uncaught Error: Class "Drupal\Component\Plugin\PluginManagerBase" not found in /home/quitpathshareaco/public_html/New/vendor/drupal/core/tests/Drupal/Tests/Component/Plugin/StubPluginManagerBase.php:12 Stack trace: #0 {main} thrown in /home/quitpathshareaco/public_html/New/vendor/drupal/core/tests/Drupal/Tests/Component/Plugin/StubPluginManagerBase.php on line 12