I wanted to submit my app for the App Store on iTunes Connect, but whatever I do I got this last message telling me there are still one or more errors on the page.
I was having the same issue i.e there are one or more errors on the page... and no indication what error is there. Finally I resolved it by traversing each option above. Though all i set was "Pricing" and as my app was free so i checked that option. Then i came back to the first tab and hit submit, and it worked, with no error.