Fatal error: Uncaught Symfony\Component\Config\Util\Exception\XmlParsingException: [ERROR 522] Validation failed: no DTD found ! (in n/a - line 5, column 127) [ERROR 68] StartTag: invalid element name (in n/a - line 16, column 2) [ERROR 68] StartTag: invalid element name (in n/a - line 16, column 3) [ERROR 68] StartTag: invalid element name (in n/a - line 16, column 4) [ERROR 68] StartTag: invalid element name (in n/a - line 16, column 5) [ERROR 68] StartTag: invalid element name (in n/a - line 16, column 6) [ERROR 68] StartTag: invalid element name (in n/a - line 16, column 7) [ERROR 68] StartTag: invalid element name (in n/a - line 16, column 8) in /var/www/clients/client1/web16/web/custom/plugins/NetzdB2bCommerce/vendor/symfony/config/Util/XmlUtils.php:66 Stack trace: #0 /var/www/clients/client1/web16/web/custom/plugins/NetzdB2bCommerce/vendor/symfony/config/Util/XmlUtils.php(146): Symfony\Component\Config\Util\XmlUtils::parse() #1 /var/www/clients/client1/web16/web/vendor/symfony/dependency-injection/Loader/XmlFileLoa in /var/www/clients/client1/web16/web/vendor/symfony/dependency-injection/Loader/XmlFileLoader.php on line 381