Redmine

Hello
I have just install new plugin [ Scrum according to this address http://www.redmine.org/plugins/scrum-plugin ] on my Redmine [release 3.0.3] but just after installing new plugin I confronted by this error :

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.

My production information view 

Environment:
  Redmine version                3.0.3.stable
  Ruby version                   2.1.5-p273 (2014-11-13) [x86_64-linux-gnu]
  Rails version                  4.2.1
  Environment                    production
  Database adapter               Mysql2
SCM:
  Subversion                     1.8.10
  Mercurial                      3.1.2
  Bazaar                         2.7.0
  Git                            2.1.4
  Filesystem                     
Redmine plugins:
  redmine_ckeditor               1.1.4
  scrum                          0.16.0

Here is Log details

XXXXXXXXX www/redmine#tail log/production.log
    2:   <p class="nodata"><%= l(:label_no_data) %></p>
    3: <%- else -%>
    4:   <table class="list">
  app/views/common/_tabs.html.erb:22:in `block in _app_views_common__tabs_html_erb__3386945223162113188_80520820'
  app/views/common/_tabs.html.erb:21:in `each'
  app/views/common/_tabs.html.erb:21:in `_app_views_common__tabs_html_erb__3386945223162113188_80520820'
  app/helpers/application_helper.rb:321:in `render_tabs'
  app/views/projects/settings.html.erb:3:in `_app_views_projects_settings_html_erb__3257235557378271841_80433580'

XXXXXXXX www/redmine# tail log/development.log
   (0.8ms)  SELECT version FROM schema_migrations
Mysql2::Error: Table 'redmine_development.schema_migrations' doesn't exist: SELECT version FROM schema_migrations