Rails v6.0.0 推送到 Heroku 失败 - Rake & Bundler 错误消息

Question

这是我第一次尝试将 Rails v6.0.0 应用程序推送到 Heroku。错误消息是：

Could not detect rake tasks
ensure you can run `$ bundle exec rake -P` against your app
and using the production group of your Gemfile.
Activating bundler (2.0.1) failed:
Could not find 'bundler' (2.0.1) required by your /tmp/build_94b6a9e04d812c465a5480f59429532e/Gemfile.lock.
To update to the latest version installed on your system, run `bundle update --bundler`.
To install the missing version, run `gem install bundler:2.0.1`
Checked in 'GEM_PATH=vendor/bundle/ruby/2.5.0', execute `gem env` for more information
To install the version of bundler this project requires, run `gem install bundler -v '2.0.1'`

• 我可以运行"捆绑执行耙-P"，没问题。
• 我已经验证了捆绑程序 2.0.1 已安装，没问题。

建议？

Answer 1

捆绑器存储库上的类似错误报告提到bundler 2.0.1与 heroku 冲突。我从该评论中复制了以下修复说明：

• gem install bundler -v 2.0.2
• bundle update --bundler
• 提交并推送存储库中的 Gemfile.lock 更改
• 使用git push heroku master进行部署