:( 404 页面没有找到:未初始化路由参数,url:/course/teacher/about.html 
    beacon\RouteError: 未初始化路由参数,url:/course/teacher/about.html
    #0 /home/www/www.com/vendor/wj008/beacon/core/Route.php(733): beacon\Route::getMapping()
    #1 /home/www/www.com/www/index.php(87): beacon\Route::run()
    #2 {main}