[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: forum_id
[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: mode
[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: topic_id
[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: forum_id
[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: mode
[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: topic_id
[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: forum_id
[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: mode
[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: topic_id
[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: forum_id
[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: mode
[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: topic_id
[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: forum_id
[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: mode
[phpBB Debug] PHP Notice: in file [ROOT]/phpbb/feed/controller/feed.php on line 319: compact(): Undefined variable: topic_id

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/phpbb/feed/helper.php(123): generate_text_for_display() #5 /var/www/html/forum/phpbb/feed/controller/feed.php(352): phpbb\feed\helper->generate_content() #6 /var/www/html/forum/phpbb/feed/controller/feed.php(273): phpbb\feed\controller\feed->send_feed_do() #7 /var/www/html/forum/phpbb/feed/controller/feed.php(223): phpbb\feed\controller\feed->send_feed() #8 /var/www/html/forum/vendor/symfony/http-kernel/HttpKernel.php(135): php in /var/www/html/forum/vendor/s9e/text-formatter/src/Renderer.php on line 18