Fatal error: Uncaught Error: Class "Drupal\Core\Field\WidgetBase" not found in /home/fnbrshareacopy/public_html/modules/contrib/panelizer/src/Plugin/Field/FieldWidget/PanelizerWidget.php:22 Stack trace: #0 {main} thrown in /home/fnbrshareacopy/public_html/modules/contrib/panelizer/src/Plugin/Field/FieldWidget/PanelizerWidget.php on line 22