Seeing "welcome to nginx" after backup restore

Thanks Jay, I did a one-click install from Digital Ocean for Discourse with Ubuntu 18.04. I didn’t install acme or nginx.

It’s brand new, and then the only thing I’ve done is to restore my backup.

I don’t have anything else setup on this new droplet. Is there a log where I should look for errors?

Does order matter when adding https and restoring backups? Or switching DNS for servers?