在Heroku（node.js）上部署应用程序后出现应用程序错误

Question

我知道

Application error
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 logs --tail

在heroku上部署我的应用程序后。当我尝试在本地运行$ heroku以便在本地测试时，所有功能都正常运行。