This was due to the csv extension not being added to the authorized extensions for staff setting.
After adding the csv extension and retriggering a PM the csv link in the subsequent PM worked.
A couple of suggestions:
-
On the automation pages, add some text and a link after the tickbox ‘Attach the CSV file to the PM’. Something like: (Requires authorization of csv extension). Linking ‘authorization of csv extension’ to
/admin/site_settings/category/all_results?filter=authorized%20extensions%20for%20staff -
To help diagnose what the issue is in future instances, if possible, change the link in the PM when csv isn’t an authorized extension, from:
href=“/404”
to something like:
href=“/unauthorized”
Thanks @pmusaraj for helping me with this one! 