errors with gems in installing -- "`require': cannot load such file -- jekyll-lunr-js-search (LoadError)"

[tomjoht]

When I try to install this plugin using the gem method, I get this error:

^Ctjohnson-mbpr13:resolve tjohnson$ gem install jekyll-lunr-js-search
Successfully installed jekyll-lunr-js-search-0.2.1
Parsing documentation for jekyll-lunr-js-search-0.2.1
1 gem installed
tjohnson-mbpr13:resolve tjohnson$ jekyll serve
Configuration file: /Users/tjohnson/projects/resolve/_config.yml
/Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/jekyll-2.5.3/lib/jekyll/plugin_manager.rb:29:in `require': cannot load such file -- jekyll-lunr-js-search (LoadError)
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/jekyll-2.5.3/lib/jekyll/plugin_manager.rb:29:in `block in require_gems'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/jekyll-2.5.3/lib/jekyll/plugin_manager.rb:26:in `each'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/jekyll-2.5.3/lib/jekyll/plugin_manager.rb:26:in `require_gems'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/jekyll-2.5.3/lib/jekyll/plugin_manager.rb:19:in `conscientious_require'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/jekyll-2.5.3/lib/jekyll/site.rb:79:in `setup'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/jekyll-2.5.3/lib/jekyll/site.rb:41:in `initialize'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/jekyll-2.5.3/lib/jekyll/commands/build.rb:29:in `new'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/jekyll-2.5.3/lib/jekyll/commands/build.rb:29:in `process'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/jekyll-2.5.3/lib/jekyll/commands/serve.rb:26:in `block (2 levels) in init_with_program'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/mercenary-0.3.5/lib/mercenary/command.rb:220:in `call'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/mercenary-0.3.5/lib/mercenary/command.rb:220:in `block in execute'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/mercenary-0.3.5/lib/mercenary/command.rb:220:in `each'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/mercenary-0.3.5/lib/mercenary/command.rb:220:in `execute'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/mercenary-0.3.5/lib/mercenary/program.rb:42:in `go'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/mercenary-0.3.5/lib/mercenary.rb:19:in `program'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/gems/jekyll-2.5.3/bin/jekyll:20:in `<top (required)>'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/bin/jekyll:23:in `load'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/bin/jekyll:23:in `<main>'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/bin/ruby_executable_hooks:15:in `eval'
    from /Users/tjohnson/.rvm/gems/ruby-2.0.0-p481/bin/ruby_executable_hooks:15:in `<main>'

I'm not if there are certain dependencies required that I don't have?

[blimey85]

In your _config.yml do you have the following:

gems:
  - jekyll-lunr-js-search

For my installation I added it to my Gemfile, ran bundle install and then added it to my _config.yml. Installing it on the command line will work the same. Just added it to your _config.yml and you'll be good to go.

[slashdotdash]

If you are using the gem and it is installed, ensure you have included it in your Jekyll site's config file.

_config.yml

gems: ['jekyll-lunr-js-search']