title: How to fix this error "gem install bootsnap -v '1.4.4'?
body: <p>I am a newbie and using Ruby on Rails, I am stucking with this problem. I am trying to make a new project in Ruby on Rails, and when I used this "rails new -X", it gave me this message "an error occurred while installing bootsnap (1.4.4) and Bundler cannot continue. Make sure that 'gem install bootsnap -v '1.4.4' --source 'https:rubygems.org/'' succeeds before bundling"</p>
  
  <p>Then I tried the command 'gem install bootsnap -v '1.4.4' --source 'https:rubygems.org/'' , it gave me this message : " ERROR: While executing gem ... (NoMethodError) undefined method 'downcase' for nil:NilClass"</p>
  
  <p>I tried to find something from this website "<a href="https://rubygems.org/gems/bootsnap/versions/1.4.4-java" rel="nofollow noreferrer">https://rubygems.org/gems/bootsnap/versions/1.4.4-java</a>" and installed it, but nothing changed.</p>
  
  <p>My gem version is 2.5.2</p>
  
  <p>I know my question is just a little bit stupid but could you please help me? Thank you very much.</p>