Fatal error: Uncaught ValueError: "sitemap.xml" is not a valid backing value for enum Citrus\Router\Protocol in /var/www/app/mail-backend-php/vendor/citrus-framework/framework/src/Router.php:84 Stack trace: #0 /var/www/app/mail-backend-php/vendor/citrus-framework/framework/src/Router.php(84): Citrus\Router\Protocol::from('sitemap.xml') #1 /var/www/app/mail-backend-php/vendor/citrus-framework/framework/src/Router.php(59): Citrus\Router->parse('/sitemap.xml') #2 /var/www/app/mail-backend-php/vendor/citrus-framework/framework/src/Gateway.php(76): Citrus\Router->factory(Object(Citrus\Http\Server\Request)) #3 /var/www/app/mail-backend-php/vendor/citrus-framework/framework/src/Gateway.php(58): Citrus\Gateway::controller() #4 /var/www/app/mail-backend-php/src/index.php(57): Citrus\Gateway::main('controller') #5 {main} thrown in /var/www/app/mail-backend-php/vendor/citrus-framework/framework/src/Router.php on line 84