Redmine

Hi all,

My teammate install some plugins and appear that Activity tab is now in accessible. Here is the log file:

Started GET "/projects/itos/activity" for 103.27.238.72 at 2015-09-12 10:04:05 +0700
Processing by ActivitiesController#index as HTML
Parameters: {"id"=>"itos"}
Current user: minh.vo (id=5)
Completed 500 Internal Server Error in 33ms (ActiveRecord: 5.0ms)

NoMethodError (undefined method `activity_provider_options' for #<Class:0x00000004796810>):
lib/redmine/activity/fetcher.rb:43:in `block (2 levels) in event_types'
lib/redmine/activity/fetcher.rb:42:in `each'
lib/redmine/activity/fetcher.rb:42:in `block in event_types'
lib/redmine/activity/fetcher.rb:40:in `select'
lib/redmine/activity/fetcher.rb:40:in `event_types'
lib/redmine/activity/fetcher.rb:30:in `initialize'
app/controllers/activities_controller.rb:37:in `new'
app/controllers/activities_controller.rb:37:in `index'
lib/redmine/sudo_mode.rb:63:in `sudo_mode'

Could anyone tell me why and how to fix it?

Redmine version : 3.1.0

Thank you very much,
Regards,
Minh