Fatal error: Uncaught Error: Class 'DOMDocument' not found in /var/www/html/forum/vendor/s9e/text-formatter/src/Renderer.php:18 Stack trace: #0 /var/www/html/forum/vendor/s9e/text-formatter/src/Renderers/PHP.php(127): s9e\TextFormatter\Renderer->loadXML() #1 /var/www/html/forum/vendor/s9e/text-formatter/src/Renderer.php(27): s9e\TextFormatter\Renderers\PHP->renderRichText() #2 /var/www/html/forum/phpbb/textformatter/s9e/renderer.php(250): s9e\TextFormatter\Renderer->render() #3 /var/www/html/forum/includes/functions_content.php(600): phpbb\textformatter\s9e\renderer->render() #4 /var/www/html/forum/viewtopic.php(1666): generate_text_for_display() #5 {main} thrown in /var/www/html/forum/vendor/s9e/text-formatter/src/Renderer.php on line 18