I have gone through all the Kurento questions on Stackoverflow and this error dose not seem to have arisen before.
I have installed the Kurento media-server and java cli
All Kurento tutorials assume that you are working with stable versions. For working with development (i.e. SNAPSHOT) versions you need to add the Kurento maven archiva to your settings.xml file, because SNAPSHOTS are not published to maven central.
The procedure is explanined here. See the section "Kurento Java Client".
Basically, you need to edit your ~/.m2/settings.xml file and add the appropriate repositories there.