Fatal error: Uncaught Error: Undefined constant "Podlove\PLUGIN_DIR" in /var/www/eintrachtpodcast/wp-content/plugins/podlove-podcasting-plugin-for-wordpress/lib/feeds/rss.php:7 Stack trace: #0 {main} thrown in /var/www/eintrachtpodcast/wp-content/plugins/podlove-podcasting-plugin-for-wordpress/lib/feeds/rss.php on line 7