Root Cause: Version mismatch. After reviewing the logfiles (Tomcat Framework) and installation file, it was concluded that the installed version did not correspond to the WEBUI 12.0.3. The installation still looks like it is a 12.0.0 or at most 12.0.2. In particular, the ROOT war still contains vaadin in version 7.6.3 while WEBUI 12.0.3 bundles vaadin version 7.7.9.
Correct the version mismatch by upgrading the system from 12.0.1 to 12.0.3.
Then the webui-plugin-analytics can be successfully installed.
Fix Status: No Fix