Mongo failure when trying to open a err with many 'instances'

[moretea]

Hi,

We're getting the following exception:
Mongo::OperationFailure: too much data for sort() with no index. add an index or specify a smaller limit

The internal backtrace points to
[PROJECT_ROOT]/controllers/errs_controller.rb:34 → show

[ndbroadbent]

Hi there. Firstly, please make sure your Errbit code is up to date.
Secondly, this problem might be solved by running rake db:mongoid:create_indexes

[moretea]

Thanks for the quick reply. We'll try that first!

[ndbroadbent]

No problem! Please note that you'll have to run rake db:migrate if you haven't updated for a while.