Ruby on Rails: Bundler couldn't find some gems.Did you run 'bundle install'

Question

I am trying to run Fedena which is Ruby on Rails application. I have a hosting account with CPanel. When I try to run Ruby on Rails application, I see the following error in logs:

Bundler couldn't find some gems.Did you run 'bundle install'

Questions:

1. Is this issue related to Ruby on Rails version? How do I know which version I am running?
2. How do I fix this issue?

Here's complete error:

/home/abc/rails_apps/abc/config/../config/preinitializer.rb:18: Bundler couldn't find some gems.Did you run `bundle install`? (RuntimeError)
    from /home/abc/rails_apps/abc/config/boot.rb:29:in `load'
    from /home/abc/rails_apps/abc/config/boot.rb:29:in `preinitialize'
    from /home/abc/rails_apps/abc/config/boot.rb:11:in `boot!'
    from /home/abc/rails_apps/abc/config/boot.rb:127
    from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
    from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
    from /home/abc/rails_apps/abc/config/environment.rb:1
    from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
    from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:147:in `rails'
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:113:in `cloaker_'
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:149:in `call'
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:149:in `listener'
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:99:in `cloaker_'
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:50:in `call'
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/configurator.rb:50:in `initialize'
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:84:in `new'
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:84:in `run'
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/../lib/mongrel/command.rb:212:in `run'
    from /usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/bin/mongrel_rails:281
    from /usr/bin/mongrel_rails:23:in `load'

Answer 1

I run fedena app in local m/c

1. 

2. bundle install info

Hope it helps..

Answer 2

As you mentioned that you are deploying in Cpanel. First, you should get SSH access then you can run command bundle install in the root folder on the app.

1. You can run rails -v via SSH to know about the Rails version.
2. Run command bundle install in the root folder on the app to fix this issue.