Here's the error you're getting:
[Wed May 17 22:09:02 2017] [error] [client 127.0.0.1] SoftException in Application.cpp:256: File "/home/hwiremod/public_html/prometheus/index.php" is writeable by group, referer: http://hwiremod.heliohost.org
And if you look at the permissions:
root@johnny [/home/hwiremod/public_html/prometheus]# ls -la | grep index
-rw-rw-r--. 1 hwiremod hwiremod 5630 May 17 10:11 index.php
^
|
this is the problem
That's 664, and it needs to be 644 otherwise php cries about it. After I changed the permissions for you it gives an error about not having the right mysql credentials http://hwiremod.heliohost.org/prometheus/ Generally php files should be 644, directories should by 755 except for public_html which should be 750, but that is created when your account is so you don't need to mess with that.