[09-Jun-2022 07:33:04 UTC] PHP Fatal error: Uncaught Error: Class 'WP_Widget' not found in /home/amelie/public_html/wp-content/plugins/optimizePressPlugin/lib/widgets/op_TabbedBlogInfoWidget.php:3 Stack trace: #0 {main} thrown in /home/amelie/public_html/wp-content/plugins/optimizePressPlugin/lib/widgets/op_TabbedBlogInfoWidget.php on line 3 XML-RPC server accepts POST requests only.