7.3.0 Community - Tomcat deployment on Ubuntu - help required

Following the instructions: but with the new 7.3.0-deploy release.

Ubuntu 16.04 LTS

When I try to start the tomcat service I get an error:

adminuser@ud73007:/opt$ sudo service tomcat7 start
Job for tomcat7.service failed because the control process exited with error code. See "systemctl status