connection error (7.3)

Hello.

I’m creating a local server (7.3) but when I start the connection I get an error message

is set ports and the address as this image (link down)

https://www.dropbox.com/s/htucfuxa021ufym/error login.PNG?dl=0

Note: I am new to the creation or development of a local server of wow

I am getting this same issue and tried everything as far as opening ports, turning off firewall, altering config wtf file in client to SET portal “127.0.0.1” and all other local ips and external ips and matched them at the same time to the server configs but still the same error code. Its driving me mad so any help please.