beacon\RouteError: 未初始化路由参数,url:/sitemap.xml
    #0 /home/www/dlut.px/vendor/wj008/beacon/core/Route.php(737): beacon\Route::getMapping('/sitemap.xml')
    #1 /home/www/dlut.px/www/index.php(72): beacon\Route::run()
    #2 {main}