This change will attach an error message to the exportResult and then put that message onto the cache.
This cached message will be shown on the AdminCampaignStats page.
Checklist:
[ ] I have manually tested my changes on desktop and mobile
[ ] The test suite passes locally with my changes
[ ] If my change is a UI change, I have attached a screenshot to the description section of this pull request
Fixes # (issue)
Feature Request: error-message handler to make you aware you don't have an S3 bucket hooked up in Heroku https://github.com/StateVoicesNational/Spoke/issues/2233
Description
This change will attach an error message to the exportResult and then put that message onto the cache. This cached message will be shown on the AdminCampaignStats page.
Checklist: