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

For people who are not using Heroku:

I Tried everything and I was still receiving this error. even this link didn't help me: https://github.com/jekyll/jekyll/issues/7463

So this was my solution:

Push your code on GitHub. delete project folder create a new folder and pull your code bundle install That's it. bundler update --bundler was not helping me at the end and I didn't use it.

One more important thing: I updated my ruby version but I was getting this error because my RVM default version was an old version. even when you use rvm use VERSION_NUMBER -- default will not help because as soon as you log out from terminal the default version will change to the old one and you will have the same issue.

For this you can use this answer: How to set default Ruby version with RVM?

or just uninstall old ruby version with rvm uninstall X.X.X and install the new one with rvm install X.X.X and make it default by rvm use --default X.X.X.

cheers.