Fatal error: Uncaught Error: Class "Drupal\Core\Controller\ControllerBase" not found in /home/quitpathshareaco/public_html/New/vendor/drupal/core/modules/system/src/Controller/ThemeController.php:20 Stack trace: #0 {main} thrown in /home/quitpathshareaco/public_html/New/vendor/drupal/core/modules/system/src/Controller/ThemeController.php on line 20