I'm having issues with getting the NoSQL and Cloud connectivity extensions running on one of my test machines. The OS is ubuntu 18.04.3 LTS , gnome 3.28.2 and Java 8 openjdk. The machine was freshly installed. I've tried with both J8 openjdk and the oracle version but with both the NoSQL and Cloud extensions fail. Other seem to work fine.
On another machine, running Ubuntu 18.04 LTS, Gnome 3.28.4 and Java 8 oracle it works fine.