@Robblehead
Your fqdn should be like snipeit.abc.new
in your router or host file write a custom dns as
192.168.1.10 snipeit.abc.new
Now from your browser http://snipeit.abc.new
it will work.

@brandon.hay
ignore this error,go to your browser http://your fqdn
and complete the remaining process via snipeit
it will work.
Tested.