Worked it out.
In the admin panel:
then tick the 'upload files' box for registered users.
In the past we could access the admin page to read the Node.js error logs, check the database version etc. However that link is not working anymore. I guess it was as Plugins > Advanced, but on click on Advanced nothing happens ..
What happens when you go to /admin/advanced/database directly? It is working fine on this forum.