Fatal error: Uncaught Error: Call to undefined function wp_should_skip_block_supports_serialization() in /var/www/html/wp-includes/block-supports/elements.php:101 Stack trace: #0 /var/www/html/wp-includes/class-wp-hook.php(309): wp_render_elements_support_styles() #1 /var/www/html/wp-includes/plugin.php(191): WP_Hook->apply_filters() #2 /var/www/html/wp-includes/blocks.php(854): apply_filters() #3 /var/www/html/wp-includes/blocks.php(939): render_block() #4 /var/www/html/wp-includes/class-wp-hook.php(307): do_blocks() #5 /var/www/html/wp-includes/plugin.php(191): WP_Hook->apply_filters() #6 /var/www/html/wp-includes/post-template.php(253): apply_filters() #7 /var/www/html/wp-content/themes/usmfg/page.php(21): the_content() #8 /var/www/html/wp-includes/template-loader.php(106): include('...') #9 /var/www/html/wp-blog-header.php(19): require_once('...') #10 /var/www/html/index.php(17): require('...') #11 {main} thrown in /var/www/html/wp-includes/block-supports/elements.php on line 101