web - 为什么我在通过 Github 存储库在 Heroku 上托管我的网站时出错？

Question

我正在尝试使用我的 Github 存储库通过 Heroku 托管我的网站，但出现代码错误。我应该怎么办？在此处输入图像描述

-----> Building on the Heroku-20 stack
-----> Determining which buildpack to use for this app
 !     No default language could be detected for this app.
            HINT: This occurs when Heroku cannot detect the buildpack to use for this application automatically.
            See https://devcenter.heroku.com/articles/buildpacks
 !     Push failed

标签： webherokuweb-deploymentweb-development-server