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'

```