[ERROR] invoices#index (ActionView::Template::Error) "Invalid string: {\n \"id\": ...

[gbp]

An ActionView::Template::Error occurred in invoices#index:

  Invalid string: {
  "id": ...k": null
}; must be at most 5000 characters
  app/models/alaveteli_pro/invoice_collection.rb:55:in `invoices'


-------------------------------
Request:
-------------------------------

  * URL        : https://www.whatdotheyknow.com/profile/invoices
  * HTTP Method: GET
  * Parameters : {"controller"=>"alaveteli_pro/invoices", "action"=>"index"}


-------------------------------
Backtrace:
-------------------------------

  app/models/alaveteli_pro/invoice_collection.rb:55:in `invoices'
  app/models/alaveteli_pro/invoice_collection.rb:40:in `each'
  app/models/alaveteli_pro/invoice_collection.rb:26:in `select'
  app/models/alaveteli_pro/invoice_collection.rb:26:in `open'
  app/views/alaveteli_pro/invoices/index.html.erb:15
  app/controllers/application_controller.rb:126:in `record_memory'
  lib/deeply_nested_params.rb:15:in `call'
  lib/strip_empty_sessions.rb:14:in `call'