Fatal error: Uncaught Error: Class "Drupal\Component\Plugin\PluginBase" not found in /home/fnbrshareacopy/public_html/modules/contrib/panelizer/src/Plugin/PanelizerEntityBase.php:18 Stack trace: #0 {main} thrown in /home/fnbrshareacopy/public_html/modules/contrib/panelizer/src/Plugin/PanelizerEntityBase.php on line 18