ruby - Redmine on Passenger (nginx) won't start -

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i followed following tutorial: http://redminecrm.com/boards/4/topics/448-installing-redmine-2-2-passenger-nginx-rvm-on-ubuntu-12-04

at first, had problems mysql2 fixed editing gemfile , running bundle update. after which, ran new problem. attached below traceback. hope me one.

i'm using ruby 2.0.0p0, passenger-4.0.0.rc6, nginx 1.2.7.

no such file load -- iconv (loaderror)   /var/data/redmine/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:317:in `rescue in depend_on'   /var/data/redmine/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:312:in `depend_on'   /var/data/redmine/bundle/ruby/2.0.0/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:225:in `require_dependency'   /var/data/redmine/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/engine.rb:439:in `block (2 levels) in eager_load!'   /var/data/redmine/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/engine.rb:438:in `each'   /var/data/redmine/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/engine.rb:438:in `block in eager_load!'   /var/data/redmine/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/engine.rb:436:in `each'   /var/data/redmine/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/engine.rb:436:in `eager_load!'   /var/data/redmine/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/application/finisher.rb:53:in `block in <module:finisher>'   /var/data/redmine/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `instance_exec'   /var/data/redmine/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `run'   /var/data/redmine/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/initializable.rb:55:in `block in run_initializers'   /var/data/redmine/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `each'   /var/data/redmine/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `run_initializers'   /var/data/redmine/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/application.rb:136:in `initialize!'   /var/data/redmine/bundle/ruby/2.0.0/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in `method_missing'   /var/data/redmine/config/environment.rb:14:in `<top (required)>'   config.ru:3:in `require'   config.ru:3:in `block in <main>'   /var/data/redmine/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval'   /var/data/redmine/bundle/ruby/2.0.0/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize'   config.ru:1:in `new'   config.ru:1:in `<main>'   /usr/local/rvm/gems/ruby-2.0.0-p0/gems/passenger-4.0.0.rc6/helper-scripts/rack-preloader.rb:82:in `eval'   /usr/local/rvm/gems/ruby-2.0.0-p0/gems/passenger-4.0.0.rc6/helper-scripts/rack-preloader.rb:82:in `preload_app'   /usr/local/rvm/gems/ruby-2.0.0-p0/gems/passenger-4.0.0.rc6/helper-scripts/rack-preloader.rb:127:in `<module:app>'   /usr/local/rvm/gems/ruby-2.0.0-p0/gems/passenger-4.0.0.rc6/helper-scripts/rack-preloader.rb:6:in `<module:phusionpassenger>'   /usr/local/rvm/gems/ruby-2.0.0-p0/gems/passenger-4.0.0.rc6/helper-scripts/rack-preloader.rb:5:in `<main>'

read logs !

no such file load -- iconv (loaderror)

install iconv on system, install iconv gem

gem install iconv

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