ruby - I can not get rails server to run on cloud9 -


when run rails server issue get: rails server -b $ip -p $port

=> booting webrick

=> rails 4.2.1 application starting in development on http://0.0.0.0:8080

=> run rails server -h more startup options

=> ctrl-c shutdown server

exiting

/usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.1/lib/rails/commands/server.rb:142:in log_to_stdout': undefined methodformatter' nil:nilclass (nomethoderror)

    /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.1/lib/rails/commands/server.rb:78:in `start'     /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:80:in `block in server'     /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:75:in `tap'     /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:75:in `server'     /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.1/lib/rails/commands/commands_tasks.rb:39:in `run_command!'     /usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.1/lib/rails/commands.rb:17:in `<top (required)>'     bin/rails:4:in `require'     bin/rails:4:in `<main>'

i made adjustments config.ru file did not work changed back. how fix problem?


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