Fatal error: Uncaught Error: Class "WP_Block_Metadata_Registry" not found in /usr/local/www/wordpress/wp-includes/blocks.php:428 Stack trace: #0 /usr/local/www/wordpress/wp-includes/blocks/legacy-widget.php(65): register_block_type_from_metadata('/usr/local/www/...', Array) #1 /usr/local/www/wordpress/wp-includes/class-wp-hook.php(324): register_block_core_legacy_widget('') #2 /usr/local/www/wordpress/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #3 /usr/local/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #4 /usr/local/www/wordpress/wp-settings.php(700): do_action('init') #5 /usr/local/www/wordpress/wp-config.php(96): require_once('/usr/local/www/...') #6 /usr/local/www/wordpress/wp-load.php(50): require_once('/usr/local/www/...') #7 /usr/local/www/wordpress/wp-blog-header.php(13): require_once('/usr/local/www/...') #8 /usr/local/www/wordpress/index.php(17): require('/usr/local/www/...') #9 {main} thrown in /usr/local/www/wordpress/wp-includes/blocks.php on line 428