Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/theinsightpartne/public_html/blog/wp-content/plugins/gutenberg/lib/compat/wordpress-6.1/rest-api.php:21 Stack trace: #0 {main} thrown in /home/theinsightpartne/public_html/blog/wp-content/plugins/gutenberg/lib/compat/wordpress-6.1/rest-api.php on line 21