Fatal error: Uncaught Error: Class 'DOMDocument' not found in /srv/piwigo/web/include/emogrifier.class.php:406 Stack trace: #0 /srv/piwigo/web/include/emogrifier.class.php(233): Emogrifier->createXmlDocument() #1 /srv/piwigo/web/include/functions_mail.inc.php(955): Emogrifier->emogrify() #2 /srv/piwigo/web/include/functions_mail.inc.php(853): move_css_to_body('<!DOCTYPE html ...') #3 /srv/piwigo/web/include/functions_mail.inc.php(458): pwg_mail(Array, Array, Array) #4 /srv/piwigo/web/admin/include/updates.class.php(206): pwg_mail_admins(Array, Array, false, true) #5 /srv/piwigo/web/include/page_tail.php(48): updates->notify_piwigo_new_versions() #6 /srv/piwigo/web/include/functions.inc.php(983): include('/srv/piwigo/web...') #7 /srv/piwigo/web/include/functions_html.inc.php(284): redirect_html('identification....') #8 /srv/piwigo/web/include/functions_category.inc.php(44): access_denied() #9 /srv/piwigo/web/index.php(21): check_restrictions('976') #10 {main} thrown in /srv/piwigo/web/include/emogrifier.class.php on line 406