Fatal error: Uncaught Error: Class "WP_HTML_Tag_Processor" not found in /home/pacs/vcg00/users/compgen.de/wordpress/wp-includes/interactivity-api/class-wp-interactivity-api-directives-processor.php:18 Stack trace: #0 {main} thrown in /home/pacs/vcg00/users/compgen.de/wordpress/wp-includes/interactivity-api/class-wp-interactivity-api-directives-processor.php on line 18