Fatal error: Uncaught Error: Class 'DOMDocument' not found in /mnt/tn_storage/tn/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/utils/class-amp-dom-utils.php:55 Stack trace: #0 /mnt/tn_storage/tn/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/utils/class-amp-dom-utils.php(293): AMP_DOM_Utils::get_dom('<html><head><me...') #1 /mnt/tn_storage/tn/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/class-amp-content.php(106): AMP_DOM_Utils::get_dom_from_content('<h6></h6>\n<p><s...') #2 /mnt/tn_storage/tn/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/class-amp-content.php(93): AMP_Content_Sanitizer::sanitize('<h6></h6>\n<p><s...', Array, Array) #3 /mnt/tn_storage/tn/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/class-amp-content.php(54): AMP_Content->sanitize('<h6></h6>\n<p><s...') #4 /mnt/tn_storage/tn/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/class-amp-content.php(22): in /mnt/tn_storage/tn/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/utils/class-amp-dom-utils.php on line 55