My site appears Site Temporarily Unavailable, in the end is why?

The following is the specific content:

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”

May I ask how the case? Thank you!

This is often the issue (Rebuild httpd conf):

Is not “Dreamhost” update caused it?