Avior 2.0 Web GUI and Avio 1.3 java app --Nothing works!!

[Fragkiskos Sardis]

This is what I get as soon as I attempt to view the switches attached to the controller. 

The java app version also crashes as soon as I attempt to view switch configurations.

I am using a Raspberry Pi as a Floodlight controller and Open vSwitch on another Raspberry Pi with multiple NICs. This is a university Research project on SDN technology that just started so we are still trying to learn the basics.

Opening the web interface of Floodlight shows me the correct configuration, topology and switches. It is always Avior that has a problem. 

I cannot find anything in the Readme files and I am not an expert in java/node.js/npm. Can anyone help me with this?