Bundler: can't find gem bundler (>= 0.a) with executable bundle (Gem::GemNotFoundException) during bundle install with gem

Question

I\'m executing the following script:

gem install rdoc --no-document
gem install bundle
bundle

output:

+ gem install rdoc --         


        

Answer 1

gem install bundler -v '< 2.0' 

Answer 2

I saw a similar error message for the travis bundle after upgrading mac os to Catalina.

Traceback (most recent call last):
    2: from /usr/local/bin/travis:22:in `<main>'
    1: from /usr/local/Cellar/ruby/2.6.5/lib/ruby/2.6.0/rubygems.rb:263:in `bin_path'
/usr/local/Cellar/ruby/2.6.5/lib/ruby/2.6.0/rubygems.rb:284:in `find_spec_for_exe': can't find gem travis (>= 0.a) with executable travis (Gem::GemNotFoundException)

To resolve the issue, I reinstalled travis from source.

brew remove travis;
brew install -s travis

Answer 3

I faced this same issue. The issue is caused by the fact that RubyGems cannot find an executable bundle for the bundler gem on the system

To fix it, first run

gem install bundler

if you don't have bundler gem installed locally, then run

gem update --system

That's all

I hope this helps