Error 500 while trying to browse new repository
Created by: gregf
After upgrading from 2.9 to 3.0 I am unable to browse the files on my newly created repository.
Rendered tree/_submodule_item.html.haml (2.4ms)
Rendered tree/_tree.html.haml (83.0ms)
Rendered tree/show.html.haml within layouts/project_resource (85.7ms)
Completed 500 Internal Server Error in 100ms
ActionView::Template::Error (can't convert nil into String):
    30:           %td
    31:           %td
    32: 
    33:       = render_tree(tree.contents)
    34: 
    35:     - if tree.readme
    36:       = render "tree/readme", readme: tree.readme
  app/helpers/tree_helper.rb:18:in `+'
  app/helpers/tree_helper.rb:18:in `block in render_tree'
  app/helpers/tree_helper.rb:15:in `each'
  app/helpers/tree_helper.rb:15:in `render_tree'
  app/views/tree/_tree.html.haml:33:in `_app_views_tree__tree_html_haml__1015439342_108194740'
  app/views/tree/show.html.haml:3:in `_app_views_tree_show_html_haml___370792724_108448290'
  app/controllers/tree_controller.rb:17:in `show'