Hello Seenu,
It seems to be a common issue. I am facing it when I installed it on a Linux machine. Earlier it was working fine when I installed it but now I started seeing this error.
"Unable to connect to server : Error during authentication Internal server error: Authprovider Does not define required parameter: url"
I have Installed "Single-User Demonstration Package", on jetty and as listed in the documentation it seems that Unzip the package and Start.sh Script will do the rest for you.
Please tell if any other step to be taken care.