What does SystemExit mean in this context?

Rails
1

I’m using the very cool Exception_Notification plugin to receive error
reports. Occasionally, I get one of these:

A ActiveRecord::StatementInvalid occurred in [controller]#[view]:

SystemExit: exit: SELECT * FROM table WHERE (some_id = 1335) ORDER BY 
position LIMIT 1
  [RAILS_ROOT]/vendor/rails/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb:120:in 
`log'

I’m not sure what to do with this information. Can anyone advise?