Unable to find facedetect opencv plugin for gstreamer pipeline

I have a fresh Jetpack 4.2.3 installed on a Jetson Nano.
I see that the nano has GStreamer 1.14.1 and OpenCV 3.3.1
But unfortunate it seems that the facedetect plugin is missing

roy@jetson:~/nano$ gst-inspect-1.0 facedetect
No such element or plugin ‘facedetect’

How can I rectify this situation?

It is native gstreamer plugin and please go to

For runnind deep learning models, we suggest you try DS4.0.1

Please check if you have gst-plugins-bad installed. facedetect is in bad-plugins so may not be installed.