Bundler: You must use Bundler 2 or greater with this lockfile

Question

I\'m working with heroku and every time I try to push my app this message shows out:

remote: Compressing source files... done.
remote: Building source:
remo         


        

Answer 1

The Ruby 2.6.0 is not the case of this problem. The default version of Bundler incorrectly invoked when using bin stubs. For more details please refer the following link

Solution: Bundler 2 is available on the system and is the latest version, So it should be invoked instead of the default bundler version.

Update Rubygems

gem update --system

Update bundler

gem install bundler

Update Gemfile.lock in your project

bundler update --bundler