CD is broken after latest merge

[bvreede]

After the last merge, the CD broke. This creates two urgent issues:

• [x] The problem needs to be fixed so that the page can be rendered #61
• [ ] We need a preview in a PR, because this should have been spotted before merge (Also mentioned in #10)

[bvreede]

Check this for PR preview: https://github.com/marketplace/actions/deploy-pr-preview