I pulled the latest code of L2switch from github and connected mininet (linear topology for 6 switches) and confirmed the same are connected to ODL.
After running the following command: feature:install odl-openflowplugin-all odl-l2switch-all odl-dlux-all
I tried accessing the UI at --> http://localhost:8181/dlux/index.html
It gives 404 error and checked Karaf.log which gives multiple errors while feature installation.
I have raised the bug against this