404 - Path /org/eclipse/tycho/extras/tycho-extras/2.3.0/tycho-extras-2.3.0.pom not found in group repository "Public Repository Group" [id=public].

Path /org/eclipse/tycho/extras/tycho-extras/2.3.0/tycho-extras-2.3.0.pom not found in group repository "Public Repository Group" [id=public].