我用这个链接下载了play scala应用程序https://www.playframework.com/getting-started 并根据我们的要求修改了逻辑。我在heroku上成功部署了应用程序。但是当我使用herolu提供的url访问网站时，它会显示一条类似这样的应用程序错误消息

An error occurred in the application and your page could not be served. If you are the application owner, check your logs for details. You can do this from the Heroku CLI with the command

heroku原木——尾部
2020-12-24t09:11:44.372725+00:00 heroku[路由器]：at=error code=h10 desc=“app crash”method=get path=“/”host=playsample.herokuapp.com请求\u id=96959eac-dc81-4965-9a2d-61e48bs4fegf fwd=“47.9.72.84”dyno=connect=service=status=503 bytes=protocol=https
如何解决这个问题。提前谢谢