Could not find the main class: org.nuxeo.launcher.NuxeoLauncher. Program will exit.

                                                                     [fail]

invoke-rc.d: initscript nuxeo, action “start” failed. dpkg: error processing nuxeo (–configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: nuxeo E: Sub-process /usr/bin/dpkg returned an error code (1)

How to solve this?