Generate Report is broken

[compwron]

What is the problem, and what should happen instead?
Fix this and add a test
https://casa-qa.herokuapp.com/reports "generate report" button should generate and download a CSV report instead of an error.

https://rubyforgood.slack.com/archives/C010Z8RK8E6/p1602437793333000

BugsnagAPP 10:36 AM
New unhandled error in qa from casa in case_contact_reports#index (details)
Unhandled error
ActionController::UnknownFormat: ActionController::UnknownFormat
Location
app/controllers/case_contact_reports_controller.rb:9 - index

Screenshots of current behavior, if any