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