我已经拉出该存储库以尝试操作，但出现错误。有人可以帮忙解决这个错误吗？

Question

我按要求设置了所有内容，但无法正常工作。任何帮助将不胜感激

致命错误：未捕获的Pecee \ SimpleRouter \ Exceptions \ NotFoundHttpException：类“ Controllers \ DefaultController”在C：\ xampp \ htdocs \ simple-router-demo \ vendor \ pecee \ simple-router \ src \ Pecee \中不存在SimpleRouter \ ClassLoader \ ClassLoader.php：31堆栈跟踪：＃0 C：\ xampp \ htdocs \ simple-router-demo \ vendor \ pecee \ simple-router \ src \ Pecee \ SimpleRouter \ Route \ Route.php（106）： Pecee \ SimpleRouter \ ClassLoader \ ClassLoader-> loadClass（'Controllers \ Def ...'）＃1 C：\ xampp \ htdocs \ simple-router-demo \ vendor \ pecee \ simple-router \ src \ Pecee \ SimpleRouter \ Router .php（395）：Pecee \ SimpleRouter \ Route \ Route-> renderRoute（Object（Pecee \ Http \ Request），Object（Pecee \ SimpleRouter \ Router））＃2 C：\ xampp \ htdocs \ simple-router-demo \ vendor \ pecee \ simple-router \ src \ Pecee \ SimpleRouter \ Router.php（466）：Pecee \ SimpleRouter \ Router-> routeRequest（）＃3 C：\ xampp \ htdocs \ simple-router-demo \ vendor \ pecee \ simple-router \ src \ Pecee \ SimpleRouter \ Router.php（382）：Pecee \ SimpleRouter \ Router-> handleRouteRewrite（6，'/ simple-router -...'）＃4 C：\ xampp \ htdo c：\ xampp \ htdocs \ simple-router-demo \ vendor \ pecee \ simple-router \ src \ Pecee \ SimpleRouter \ ClassLoader \ ClassLoader.php在C：\ xampp \ htdocs \ simple-router-demo \ vendor \ pecee \ simp / p>

这是存储库的链接：https://github.com/skipperbent/simple-router-demo