Fatal error: Uncaught Error: Call to undefined function register_block_type() in /var/sites/b/belfastmediafestival.co.uk/public_html/wp-includes/blocks/block.php:32 Stack trace: #0 {main} thrown in /var/sites/b/belfastmediafestival.co.uk/public_html/wp-includes/blocks/block.php on line 32