(New to Rails) rails server error: cannot load such file -- bootsnap/setup (LoadError)

Question

I have installed my JS runtime as Node, and I have bundle update-ed and bundle install-ed, but I still get this error:

/Users/macbook/Documents/Studies/Coding/the_back_end/the_odin_project/odin_on_rails/hello_app/config/boot.rb:4:in `require': cannot load such file -- bootsnap/setup (LoadError)
    from /Users/macbook/Documents/Studies/Coding/the_back_end/the_odin_project/odin_on_rails/hello_app/config/boot.rb:4:in `<top (required)>'
    from /Users/macbook/Documents/Studies/Coding/the_back_end/the_odin_project/odin_on_rails/hello_app/bin/rails:8:in `require_relative'
    from /Users/macbook/Documents/Studies/Coding/the_back_end/the_odin_project/odin_on_rails/hello_app/bin/rails:8:in `<top (required)>'
    from /Users/macbook/.rvm/gems/ruby-2.3.4/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `load'
    from /Users/macbook/.rvm/gems/ruby-2.3.4/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `call'
    from /Users/macbook/.rvm/gems/ruby-2.3.4/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
    from /Users/macbook/.rvm/gems/ruby-2.3.4/gems/spring-2.0.2/lib/spring/client.rb:30:in `run'
    from /Users/macbook/.rvm/gems/ruby-2.3.4/gems/spring-2.0.2/bin/spring:49:in `<top (required)>'
    from /Users/macbook/.rvm/gems/ruby-2.3.4/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `load'
    from /Users/macbook/.rvm/gems/ruby-2.3.4/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)>'
    from /Users/macbook/Documents/Studies/Coding/the_back_end/the_odin_project/odin_on_rails/hello_app/bin/spring:15:in `require'
    from /Users/macbook/Documents/Studies/Coding/the_back_end/the_odin_project/odin_on_rails/hello_app/bin/spring:15:in `<top (required)>'
    from bin/rails:3:in `load'
    from bin/rails:3:in `<main>'

Here's what's in my Gemfile ,

source 'https://rubygems.org'

gem 'rails',        '5.1.4'
gem 'puma',         '3.9.1'
gem 'sass-rails',   '5.0.6'
gem 'uglifier',     '3.2.0'
gem 'coffee-rails', '4.2.2'
gem 'jquery-rails', '4.3.1'
gem 'turbolinks',   '5.0.1'
gem 'jbuilder',     '2.7.0'


group :development, :test do
  gem 'sqlite3', '1.3.13'
  gem 'byebug',  '9.0.6', platform: :mri
end

group :development do
  gem 'web-console',           '3.5.1'
  gem 'listen',                '3.1.5'
  gem 'spring',                '2.0.2'
  gem 'spring-watcher-listen', '2.0.1'
end

gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

I feel a little lost on that one, and I can't find any helpful answer anywhere.

Thanks a lot in advance!

Durance

Answer 1

You have an issue with the gem bootsnap which main job is to accelerate rails startup time.

So, you should either :

• In case you want bootsnap, add gem 'bootsnap' to your gemfile to install it.
• In case you don't want bootsnap, remove the line require 'bootsnap/setup' in config/boot.rb

More info about bootsnap : https://github.com/Shopify/bootsnap#how-does-this-work

Taxis

I just did that, but then this other error appeared, /Users/macbook/.rvm/gems/ruby-2.3.4/gems/railties-5.1.4/lib/rails/application/configuration.rb:81:in `load_defaults': Unknown version "5.2" (RuntimeError) – Durance

I think you messed up with your Gemfile, because all your apps files seems to be from 5.2 version of rails while your Gemfile have gem 'rails', '5.1.4', you can try replacing it by gem 'rails', '~> 5.2' and launching an bundle install – Taxis

Answer 2

Clear the cache on tmp.

tmp > bootsnap -> delete all the files.

Acrimony