Software » Web » Redmine plugins » Scrum

I've faced an issue on production redmine after Scrum plugin installation. New issues can not be opened in all project, redmine return 500 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.

Back@

@Completed 200 OK in 154ms (Views: 45.1ms | ActiveRecord: 22.4ms)
Started GET "/projects/f-st-1704-rt/issues/new" for xx.xx.xx.xx at 2016-07-31 22:23:36 +0300
Processing by IssuesController#new as HTML
Parameters: {"project_id"=>"f-st-1704-rt"}
Current user: user100 (id=1)
Completed 500 Internal Server Error in 34ms (ActiveRecord: 17.6ms)

ActiveModel::MissingAttributeError (can't write unknown attribute `sprint_id`):
plugins/scrum/lib/scrum/issues_controller_patch.rb:33:in `add_default_sprint'
lib/redmine/sudo_mode.rb:63:in `sudo_mode'
@

Looking forward for comments... Otherwise have to revert database from backup