Fatal error: Uncaught Error: Class "DOMDocument" not found in /data/photos/include/emogrifier.class.php:406
Stack trace:
#0 /data/photos/include/emogrifier.class.php(233): Emogrifier->createXmlDocument()
#1 /data/photos/include/functions_mail.inc.php(951): Emogrifier->emogrify()
#2 /data/photos/include/functions_mail.inc.php(849): move_css_to_body()
#3 /data/photos/include/functions_mail.inc.php(459): pwg_mail()
#4 /data/photos/admin/include/updates.class.php(212): pwg_mail_admins()
#5 /data/photos/include/page_tail.php(48): updates->notify_piwigo_new_versions()
#6 /data/photos/index.php(358): include('...')
#7 {main}
thrown in /data/photos/include/emogrifier.class.php on line 406