collectstatic during deployment generates an error message.

I try to deploy a wagtail dev project to digitalocean. Once I run the on the server the command:

python manage.py collectstatic --settings=mysite.settings.production

I get the following error message:

ALLOWED_HOSTS = os.environ.get(“DJANGO_ALLOWED_HOSTS”).split(“,”) AttributeError: ‘NoneType’ object has no attribute ‘split’

I follow a commands from the tutorial learnwagtail deploy to DO

I tried different type of combinations, with (‘,’) and without as a split. combination of IP/*/ or without. I then tried on an empty wagtail project, the result is the same.

My intuition was that it wasn’t related to DO. Yet, google results show this happens mainly on DO, i.e. it happens during deployment.

I follow commands from the tutorial https://learnwagtail.com/launch-your-wagtail-website-digital-ocean-ubuntu-18/

I try to deploy an empty project, so only settings that are modified are in relation to deployment and digitalocean.

Any return/help would be highly appreciated.