This is not the right place. That project is not a FuseSource project.
That said, the error you see could maybe be because Apache Karaf has moved as a top level project at Apache, and is no longer a sub project from Felix.
EIK was once a FuseForge project led by Stephen Evanchik. He moved the project to his own Github repository and does further development there. So we can't support that application here.
But we are currently improving our tooling suite and most probably there will be Karaf tooling as well in future.