Fatal error: Uncaught Error: Class "WP_Error" not found in /var/www/eintrachtpodcast/wp-content/plugins/podlove-podcasting-plugin-for-wordpress/lib/api/error.php:5 Stack trace: #0 {main} thrown in /var/www/eintrachtpodcast/wp-content/plugins/podlove-podcasting-plugin-for-wordpress/lib/api/error.php on line 5