Fatal error: Uncaught Error: Interface "GrumPHP\Linter\LinterInterface" not found in /var/www/public/git/vendor/phpro/grumphp/src/Linter/Xml/XmlLinter.php:12 Stack trace: #0 {main} thrown in /var/www/public/git/vendor/phpro/grumphp/src/Linter/Xml/XmlLinter.php on line 12