In order to avoid NPE during removeServlet(), we have to fix it in Pax Web 1.1.x branch and upgrade to 1.1.2.
NPE during webconsole startup
Karaf 3.0 will be on Pax Web 2.x
I made the fix on Pax Web 1.1.x branch. Waiting for the release, I upgraded to Pax Web 1.1.2-SNAPSHOT (revision 1176707).