Prepending `bundle exec` to your command may solve this rails

ruby-on-rails ruby rubygems bundler

19,688

Solution 1

You need to prefix your command with bundle exec. For example, if your rake command is

rake deploy

You have instead to use

bundle exec rake deploy

Bundler will fetch the proper gem versions as listed in your Gemfile, and execute the command.

Solution 2

First run bundle update rake .

I hope this works for you.

19,688

Author by

Junaid Farooq

Hi. I do ruby & Elixir & Js. In my free time when I ever have, I watch Harry Potter, Pirates of the Caribbean. If you have watched HP. there was a scene in which Professor Severus Snape and Professor Albus Dumbledore were talking to each other and Professor Albus Dumbledore said: Lilly!!! Professor Severus Snape said: Always!! That's was defining a moment of the whole MOVIE series If you can feel it. You are on the right path my friend. Last but not the least, I like/love/adore Phil Dunphy If you haven't watched Modern Family then do watch it. I also wrote a medium article on hot upgrades with Distillery. Ashfaq Ahmad & Dave Thomas are my ideals. I do love to play snooker and Ronnie O'Sullivan is my most favorite player, He is genius, you should check him out on youtube.

Updated on July 21, 2022

Comments

Junaid Farooq almost 2 years

I am having an issue while deploying my site to AWS.

Gem::LoadError: You have already activated rake 10.4.2, but your Gemfile requires rake 10.5.0. Prepending `bundle exec` to your command may solve this.
  /var/app/ondeck/config/boot.rb:3:in `<top (required)>'
  /var/app/ondeck/config/application.rb:1:in `<top (required)>'
  /var/app/ondeck/Rakefile:4:in `<top (required)>'
  LoadError: cannot load such file -- bundler/setup
  /var/app/ondeck/config/boot.rb:3:in `<top (required)>'
  /var/app/ondeck/config/application.rb:1:in `<top (required)>'
  /var/app/ondeck/Rakefile:4:in `<top (required)>'
  (See full trace by running task with --trace)
   (ElasticBeanstalk::ExternalInvocationError)

while when I do gem list rake it gives me

*** LOCAL GEMS ***

airbrake (4.3.1)
rake (10.5.0, 10.4.2)

I want to have just one version when I do bundle exec gem uninstall rake -v 10.4.2 it gives me

ERROR:  While executing gem ... (Gem::InstallError)
    gem "rake" cannot be uninstalled because it is a default gem

How to resolve this issue? any help will be appreciated.

sevenseacat over 8 years

prepend bundle exec to whatever command you ran to give the error, exactly as the error tells you to do.
Richard over 3 years

I ran into this error when attempting to debug RoR on VSCode using WSL. I fixed that issue by adding "useBundler":true to my launch.json. VSCode throwing this error is how I ended up here.

Simone Carletti over 8 years

Please read my answer. As I wrote, just prepend your command with bundle exec.
Simone Carletti over 8 years

You need to make sure that your command never calls any other subcommand directly.
Junaid Farooq over 8 years

how to make sure that?
Simone Carletti over 8 years

It will not work if you don't use bundle exec for the subsequent commands.
Simone Carletti over 8 years

You need to inspect your code to check if you are running any shell command, and always prepend it with bundle exec.
jacob bullock about 8 years

this just solved the problem for me. bundle exec is not necessary after running this update.
Paul Danelli about 4 years

This is not a solution.