我按照步骤从这个视频上传我的后端到Heroku：https://www.youtube.com/watch?v=rSkxia0ZZQ0，我得到了这个错误：
Enumerating objects: 15, done.
Counting objects: 100% (15/15), done.
Delta compression using up to 16 threads
Compressing objects: 100% (10/10), done.
Writing objects: 100% (10/10), 3.14 KiB | 1.57 MiB/s, done.
Total 10 (delta 7), reused 0 (delta 0), pack-reused 0
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Building on the Heroku-20 stack
remote: -----> Using buildpacks:
remote: 1. https://github.com/timanovsky/subdir-heroku-buildpack.git
remote: 2. heroku/nodejs
remote: -----> Subdir buildpack app detected
remote: PROJECT_PATH is undefined
remote: ! Push rejected, failed to compile Subdir buildpack app.
remote:
remote: ! Push failed
remote: !
remote: ! ## Warning - The same version of this code has already been built: aad8206689cb2d86d27ef0e2a124aa9701bf8a7b
remote: !
remote: ! We have detected that you have triggered a build from source code with version aad8206689cb2d86d27ef0e2a124aa9701bf8a7b
remote: ! at least twice. One common cause of this behavior is attempting to deploy code from a different branch.
remote: !
remote: ! If you are developing on a branch and deploying via git you must run:
remote: !
remote: ! git push heroku <branchname>:main
remote: !
remote: ! This article goes into details on the behavior:
remote: ! https://devcenter.heroku.com/articles/duplicate-build-version
remote:
remote: Verifying deploy...
remote:
remote: ! Push rejected to heroku-skiplagged-final.
remote:
To https://git.heroku.com/heroku-skiplagged-final.git
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/heroku-skiplagged-final.git'
Procfile:
web: node backend/backend.js
我的文件夹的图片
Procfile照片
Package.json照片
PROJECT_PATH和来自Heroku 的BuildPack
出现上述错误的视频链接：https://youtu.be/T6eWAdPVOJI
Heroku看到您在visual studio代码或使用的内容中进行了一些更改，它告诉您没有在git上推送应用程序的最后版本。
remote:！##警告-此代码的同一版本已经内置：aad8206689cb2d86d27ef0e2a124aa9701bf8a7b远程：！遥控器：！我们检测到您触发了一个源代码生成版本aad8206689cb2d86d27ef0e2a124aa9701bf8a7b
您需要在项目中提交更改并将其推送到git，然后才能在heroku服务器上推送git。