I have the same problem since last week. Maybe had been a new release.that broke the CSV update workflow turning the CSV unreadable or void after deployment. Please check my question [1]
https://community.kobotoolbox.org/t/csv-file-unreadable-after-deploying/52113
The workaround that worked to me is to change the CSV update / Re deploy workflow as suggested in [2]
[2] https://community.kobotoolbox.org/t/media-files-are-not-detected-error-on-preview-and-open-collect-data/52021/11
- Delete the YOUR_CSV_FILENAME_HERE.csv file,
- Deploy the form.
- Go to media and add the YOUR_CSV_FILENAME_HERE.csv file
- Deploy the form
Voilá, the CSV now is readable!.
Hope it helps.
