Sample projects working?

Hey there,

I'm using the JBoss Quickstarts project, more specifically the Hello World one, from:

https://github.com/jboss-developer/jboss-eap-quickstarts/tree/8.0.x/helloworld

I successfully build and deploy it, but no matter what, when visiting it on the browser I'm always taken to an error page... (See screenshot).

Already checked the most obvious stuff, but looks weird that these projects are not just working out of the box.

Am I missing something?

Thanks in advance for your time!