Class 'DOMDocument' not found

File: /var/www/html/resistenzamappe/lib/Out.php
Line: 540
Code: 0

#0 /var/www/html/resistenzamappe/lib/Out.php(408): Out->setPageData()
#1 /var/www/html/resistenzamappe/lib/OutHtml.php(51): Out->getPageData()
#2 /var/www/html/resistenzamappe/lib/vendor/Twig/Extension/CoreExtension.php(1544): OutHtml->metadata()
#3 /var/www/html/resistenzamappe/lib/vendor/Twig/Environment.php(358) : eval()'d code(48): twig_get_attribute()
#4 /var/www/html/resistenzamappe/lib/vendor/Twig/Template.php(394): __TwigTemplate_4a9da05bda04be8df1fc6628a448dc1f6c00178c38dde281360ee4784c0e2c65->doDisplay()
#5 /var/www/html/resistenzamappe/lib/vendor/Twig/Template.php(367): Twig\Template->displayWithErrorHandling()
#6 /var/www/html/resistenzamappe/lib/vendor/Twig/Template.php(379): Twig\Template->display()
#7 /var/www/html/resistenzamappe/lib/vendor/Twig/TemplateWrapper.php(40): Twig\Template->render()
#8 /var/www/html/resistenzamappe/lib/vendor/Twig/Environment.php(277): Twig\TemplateWrapper->render()
#9 /var/www/html/resistenzamappe/lib/Router.php(186): Twig\Environment->render()
#10 /var/www/html/resistenzamappe/lib/Router.php(145): Router::frontend()
#11 /var/www/html/resistenzamappe/index.php(39): Router::run()
#12 {main}