我正在尝试将我的Django应用在Heroku上直播，但我遇到了这个 关于“ git push heroku master”的错误。
git push heroku master
Counting objects: 231, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (221/221), done.
Writing objects: 100% (231/231), 739.46 KiB | 0 bytes/s, done.
Total 231 (delta 21), reused 0 (delta 0)
remote: Compressing source files... done.
remote: Building source:
remote:
remote: ! No default language could be detected for this app.
remote: HINT: This occurs when Heroku cannot detect the buildpack to use for this application automatically.
remote: See https://devcenter.heroku.com/articles/buildpacks
remote:
remote: ! Push failed
remote: Verifying deploy...
remote:
remote: ! Push rejected to aajkakaam.
remote: To https://git.heroku.com/aajkakaam.git ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/aajkakaam.git'