The member export report is not working

[mkimberlin]

Describe the bug
The CSV download of all members is broken and gives a CSV with just null in it.

To Reproduce
Steps to reproduce the behavior:

1. Click on your avatar on the top right of the app
2. Click on 'Download Members'
3. Note that the downloaded file does not contain the members

Expected behavior
The exported CSV should contain all of the non-terminated members.

Screenshots

Additional context
I believe this was introduced when the email list export was changed to the backend by @pieperm, but it could have been me with the Vite conversion.