no implicit conversion of nil into String
Rendering file /Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/_ext/split_cloud.html.haml resulted in a failure.

Line: unknown

Backtrace:

/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/_ext/split_cloud.html.haml:9:in `+'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/_ext/split_cloud.html.haml:9:in `block (2 levels) in singleton class'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/_ext/split_cloud.html.haml:7:in `each'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/_ext/split_cloud.html.haml:7:in `block in singleton class'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/_ext/split_cloud.html.haml:-7:in `instance_eval'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/_ext/split_cloud.html.haml:-7:in `singleton class'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/_ext/split_cloud.html.haml:-9:in `__tilt_70227434639500'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/.bundle/ruby/2.0.0/gems/tilt-2.0.1/lib/tilt/template.rb:155:in `call'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/.bundle/ruby/2.0.0/gems/tilt-2.0.1/lib/tilt/template.rb:155:in `evaluate'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/.bundle/ruby/2.0.0/gems/tilt-2.0.1/lib/tilt/haml.rb:17:in `evaluate'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/.bundle/ruby/2.0.0/gems/tilt-2.0.1/lib/tilt/template.rb:96:in `render'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/.bundle/ruby/2.0.0/gems/awestruct-0.5.5/lib/awestruct/handlers/base_tilt_handler.rb:135:in `rendered_content'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/.bundle/ruby/2.0.0/gems/awestruct-0.5.5/lib/awestruct/handlers/layout_handler.rb:47:in `rendered_content'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/.bundle/ruby/2.0.0/gems/awestruct-0.5.5/lib/awestruct/page.rb:143:in `rendered_content'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/.bundle/ruby/2.0.0/gems/awestruct-0.5.5/lib/awestruct/engine.rb:285:in `generate_page'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/.bundle/ruby/2.0.0/gems/awestruct-0.5.5/lib/awestruct/engine.rb:392:in `generate_page_internal'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/.bundle/ruby/2.0.0/gems/awestruct-0.5.5/lib/awestruct/engine.rb:384:in `block in run_auto_for_non_page'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/.bundle/ruby/2.0.0/gems/awestruct-0.5.5/lib/awestruct/engine.rb:383:in `each'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/.bundle/ruby/2.0.0/gems/awestruct-0.5.5/lib/awestruct/engine.rb:383:in `run_auto_for_non_page'
/Users/hardy/work/hibernate/git/in.relation.to/in.relation.to/.bundle/ruby/2.0.0/gems/awestruct-0.5.5/lib/awestruct/cli/auto.rb:58:in `block (3 levels) in run'