Rails: You have already activated rake 10.3.1, but your Gemfile requires rake 10.2.2 (Gem::LoadError)

Question

Here is my error:

rake aborted!
Gem::LoadError: You have already activated rake 10.3.1, but your Gemfile requires rake 10.2.2. Prepending `bundle exec` to yo         


        

Answer 1

My error message:

~ $ rake db:migrate                                                                                                                                                                            [2.6.5][10:21:00]
rake aborted!
Gem::LoadError: You have already activated rake 12.3.2, but your Gemfile requires rake 13.0.1. Prepending `bundle exec` to your command may solve this.
/Users/torvalds/workspace/ekohe/whitespace/config/boot.rb:5:in `'
/Users/torvalds/workspace/ekohe/whitespace/config/application.rb:3:in `require_relative'
/Users/torvalds/workspace/ekohe/whitespace/config/application.rb:3:in `'
/Users/torvalds/workspace/ekohe/whitespace/Rakefile:6:in `require_relative'
/Users/torvalds/workspace/ekohe/whitespace/Rakefile:6:in `'
(See full trace by running task with --trace)

I am using the rbenv to manage my Ruby environment.

My global Ruby version is as know as the default Ruby version is 2.7.1, because I set it as rbenv global 2.7.1. However, my rake under Ruby 2.7.1 is 12.3.2

~ $ rake --version

rake, version 12.3.2

My project Ruby version is 2.6.5. however, my rake under Ruby 2.6.5 in my project is 13.0.1

~ $ bundle exec rake --version

rake, version 13.0.1

so I have to uninstall global rake

~ $ gem uninstall rake

and reinstall it back

~ $ gem install rake

Fetching rake-13.0.1.gem
Successfully installed rake-13.0.1
1 gem installed

it works! ~~~

I'm not sure whether it will have an influence on other projects. However, so far it works.