Fatal error: Uncaught Error: Class 'WP_HTML_Tag_Processor' not found in /opt/htdocs/rea.fr/wp-includes/blocks/heading.php:27 Stack trace: #0 /opt/htdocs/rea.fr/wp-includes/class-wp-block.php(258): block_core_heading_render(Array, '\n<h3>Pr\xC3\xA9ambule...', Object(WP_Block)) #1 /opt/htdocs/rea.fr/wp-includes/blocks.php(1051): WP_Block->render() #2 /opt/htdocs/rea.fr/wp-includes/blocks.php(1089): render_block(Array) #3 /opt/htdocs/rea.fr/wp-includes/class-wp-hook.php(308): do_blocks('<!-- wp:heading...') #4 /opt/htdocs/rea.fr/wp-includes/plugin.php(205): WP_Hook->apply_filters('<!-- wp:heading...', Array) #5 /opt/htdocs/rea.fr/wp-includes/post-template.php(255): apply_filters('the_content', '<!-- wp:heading...') #6 /opt/htdocs/rea.fr/wp-content/themes/reatheme/template-parts/page/content-page.php(22): the_content('Continue readin...') #7 /opt/htdocs/rea.fr/wp-includes/template.php(785): require('/opt/htdocs/rea...') #8 /opt/htdocs/rea.fr/wp-includes/template.php(718): load_template('/opt/htdocs/rea...', false, Array) #9 / in /opt/htdocs/rea.fr/wp-includes/blocks/heading.php on line 27