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

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 `
'
    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