sprockets requires Ruby version >= 2.5.0 on rails 5
The latest (4.0.0) version of sprockets really requires ruby >= 2.5.0
. Check it here
Is gem 'sprockets'
in your Gemfile
set to a specific version?
To manually change version of sprockets add the line bellow to your Gemfile
gem 'sprockets', '~> 3.7.2'
If you do not have a Gemfile yet try direct installation.
gem install sprockets -v 3.7.2
For those that are experiencing this without having it explicitly specified in the gemfile, another workaround is to install the previous version manually:
gem install sprockets -v 3.7.2