Redmine

1. ruby -v
   ruby 2.2.1p85 (2015-02-26 revision 49769) [x86_64-linux]
2. gem --version
   2.4.8
   redmine 3.0.4

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Internal error

An error occurred on the page you were trying to access.
If you continue to experience problems please contact your Redmine administrator for assistance.

If you are the Redmine administrator, check your log files for details about the error.

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Production.log:

ActionView::Template::Error (undefined method `l_hours_short' for #<#<Class:0x007ff1a16f4510>:0x007ff1a263a6c8>):
59: end
60: unless @issue.disabled_core_fields.include?('estimated_hours')
61: unless @issue.total_estimated_hours.nil?
62: rows.right l(:field_estimated_hours), issue_estimated_hours_details(@issue), :class => 'estimated-hours'
63: end
64: end
65: if User.current.allowed_to_view_all_time_entries?(Herve Harster)
app/helpers/issues_helper.rb:119:in `issue_estimated_hours_details'
app/views/issues/show.html.erb:62:in `block in app_views_issues_show_html_erb__1793108407052780376_43601480'
app/helpers/issues_helper.rb:201:in `issue_fields_rows'
app/views/issues/show.html.erb:37:in `_app_views_issues_show_html_erb___1793108407052780376_43601480'
app/controllers/issues_controller.rb:118:in `block (2 levels) in show'
app/controllers/issues_controller.rb:115:in `show'
lib/redmine/sudo_mode.rb:63:in `sudo_mode'

Help me please.