Getting error: error id: "bad_httpd_conf"

I upgraded a parked domain that was being mirrored to a regular domain.

Now when you go to the domain address the following message is displayed:
Site Temporarily Unavailable
We apologize for the inconvenience. Please contact the webmaster/ tech support immediately to have them rectify this.
error id: “bad_httpd_conf”

What do I need to change or fix so that the index.html within the domain will show?

What’s the domain?