Unable to Save

[atikulhaider]

I have installed posty on my Ubuntu 14.04 server & generated api key.
I'm able to connect to the api url on port 9292 & the posty webUI displays correctly.
But when I try to add domain (New > input > save) & click save, the dialog box disappears & no domain shows up on the list. I don't know if it saved or not. Even doesn't throw any error.
I use Firefox browser.
My Postfix & Dovecot is running.