`workspaces': undefined method `each' for nil:NilClass (NoMethodError)

[aries1980]

With Ruby 2.2.3p173 I get the following error message:

$ asana workspace
/home/aries/.gem/ruby/gems/asana-client-1.0.0/lib/asana-client.rb:172:in `workspaces': undefined method `each' for nil:NilClass (NoMethodError)
        from /home/aries/.gem/ruby/gems/asana-client-1.0.0/lib/asana-client.rb:329:in `find'
        from /home/aries/.gem/ruby/gems/asana-client-1.0.0/lib/asana-client.rb:48:in `parse'
        from /home/aries/.gem/ruby/gems/asana-client-1.0.0/bin/asana:6:in `<top (required)>'
        from /home/aries/bin/asana:23:in `load'
        from /home/aries/bin/asana:23:in `<main>'