Generate an example of a random planar network using MeshConnectivityGraph and DelaunayMesh

Question

I have seen other people run the following code:
MeshConnectivityGraph[DelaunayMesh[RandomPoint[Disk[], 1000]]]

To generate a planar network (working towards creating a model of larger human networks). I can't get Mathematica to execute this code for me.
DelaunayMesh[RandomPoint[Disk[], 1000]]

returns an image of a mesh region.
Head @ DelaunayMesh[RandomPoint[Disk[], 1000]]

returns

MeshRegion

MeshConnectivityGraph can't seem to take this as an input and return a graph like the ones I see in the examples I'm looking at. It just returns MeshConnectivityGraph wrapped around the image of the mesh region.
Examples of people successfully executing this command:
https://www.wolframcloud.com/obj/s.wolfram/Published/COVID-19-Livestream-March-24.nb
https://community.wolfram.com/groups/-/m/t/1907703
Any insight into why this doesn't work for me, and what I can do to make it work would be very much appreciated. I'm using Mathematica 12.0.

Pillsy · Accepted Answer

If you look at the documentation for MeshConnectivityGraph on the Wolfram website, you should see this in the upper right corner:

So that is why it doesn't do what you want in Mathematica 12.0. When I typed that expression into Mathematica on my machine (also running 12.0) it was highlighted in blue, indicating that Mathematica didn't recognize it as a defined symbol. To double check, I used Mathematica's built in help to search for it:
?MeshConnectivityGraph
Missing["UnknownSymbol", "MeshConnectivityGraph"]

This drove me to look online.

Generate an example of a random planar network using MeshConnectivityGraph and DelaunayMesh

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