>
> Versions:

   - Ruby (1.9.3p484)
   - Capistrano (3.1.0)

Platform:

   - Working on Mac OS X


Error
workBook:test-deployment user$ cap test server:uptime
/Users/user/.rvm/rubies/ruby-1.9.3-p484/lib/ruby/gems/1.9.1/gems/sshkit-1.3.0/lib/sshkit.rb:3:
 
warning: already initialized constant StandardError
DEBUG [1ab63e9f] Running /usr/bin/env uptime on test-api.domain.tld
DEBUG [1ab63e9f] Command: /usr/bin/env uptime
cap aborted!
undefined method `each' for "aaaaaa":String
/Users/user/.rvm/gems/ruby-1.9.3-p484@global/gems/net-ssh-2.8.0/lib/net/ssh/authentication/session.rb:66:in
 
`authenticate'
/Users/user/.rvm/gems/ruby-1.9.3-p484@global/gems/net-ssh-2.8.0/lib/net/ssh.rb:204:in
 
`start'
config/deploy.rb:68:in `block (3 levels) in <top (required)>'
Tasks: TOP => server:uptime

Code
namespace :server do
  desc 'Show server uptime'
  task :uptime do
    on roles(:app) do |host|
      puts "#{host.hostname} reports: #{capture(:uptime)}"
    end
  end
end

server 'test-api.domain.tld', roles: 'app', ssh_options: {
    user: fetch(:user),
    forward_agent: true,
    auth_methods: fetch(:password)
}

I can't understand why, any ideas? (Exemple task from 
http://capistranorb.com/)

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