Rails error 1

Output

I18n::MissingTranslationData in Subjects#index

Showing /home/philien/AudioClassroom/app/views/subjects/index.html.haml where line #20 raised:

translation missing: en.date.formats.default
Extracted source (around line #20):

17:     - @subjects.each do |subject|
18:       %tr
19:         %td=subject.title
20:         %td=localize subject.due_for
21:         %td
22:           = link_to translate("show"), subject, :class => %w{btn}
23:           - if current_user==subject.teacher
Rails.root: /home/philien/AudioClassroom

Application Trace | Framework Trace | Full Trace
app/views/subjects/index.html.haml:20:in `block in _app_views_subjects_index_html_haml__2583652852872560416_69982768943180'
app/views/subjects/index.html.haml:17:in `_app_views_subjects_index_html_haml__2583652852872560416_69982768943180'
app/controllers/subjects_controller.rb:11:in `index'
Request

Parameters:

None
Show session dump

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Response

Headers:

None