Verify the Default Target
First we need to see what the current default target is. We can do that by running:
Since graphical.target isn't what we need, let's set it to what it should be and then make sure we're in that target.
systemctl set-default multi-user.target
systemctl isolate multi-user.target
Since this is a new server in your environment, you need to make sure custom.target is set up.
Navigate to /etc/systemd/system and create a file that looks like this:
After=basic.target rescue.service rescue.target
Once that is done, you should be able to run systemctl isolate custom.target. Check to see if httpd is running after the isolate — if it's not, you might need to install it and run the isolate again to verify your configuration is correct.