Fatal error: Uncaught Error: Class 'WP_Widget' not found in /home/castlecrockeryhi/public_html/wp-content/plugins/photo-gallery/admin/controllers/WidgetSlideshow.php:6 Stack trace: #0 {main} thrown in /home/castlecrockeryhi/public_html/wp-content/plugins/photo-gallery/admin/controllers/WidgetSlideshow.php on line 6