Fatal error: Uncaught Error: Class "Drupal\Core\Plugin\DefaultSingleLazyPluginCollection" not found in /home/quitpathshareaco/public_html/New/vendor/drupal/core/modules/block/src/BlockPluginCollection.php:12 Stack trace: #0 {main} thrown in /home/quitpathshareaco/public_html/New/vendor/drupal/core/modules/block/src/BlockPluginCollection.php on line 12