Error when serializing draft

[rekt-hard]

Serializers use certain date and the resource type variable, before making sure they have a valid value assigned (i.e. not None)

For example, performing the following steps will lead to an error:

• Create a new draft
• Remove the publication date
• Save the draft
• Navigate to https://127.0.0.1:5000/records/<draft-id>/export/json-ld?preview=1

[github-actions[bot]]

This issue was automatically marked as stale.