unknown host, and unable to "connect"

[gr33nz3bra]

hey im new and just downloaded this client, it says found an unkown host when i open the client after i get past all the debug and how many bots i want to run, and when i press "connect' it says java.io.IOException: HTTPS Hostname wrong. I think its because i dont have proper java because my mac is so old i can't update my java, or is it something else?