Help with "Module not locally installed.."

Tried to update node-red-node-rbe and it reports 'not installed locally' etc.

pi@raspberrypi:~ $ npm list -g node-red-node-rbe
/usr/lib
└─┬ node-red@0.19.4
  └── node-red-node-rbe@0.2.3

So following the above comments this thread;

pi@raspberrypi:~ $ npm uninstall -g node-red-node-rbe
up to date in 0.553s

...and it's still there!

pi@raspberrypi:~ $ npm list -g node-red-node-rbe
/usr/lib
└─┬ node-red@0.19.4
  └── node-red-node-rbe@0.2.3

Ideally, I would like to manage my nodes via the 'Manage Palette' interface.

npm version 6.4.1