Error message trying to communicate with KStars on macOS

[Paul Rodman]

I'm trying to communicate with KStars on macOS using the dbus-send app embedded in the macOS KStars application bundle. When I try and send a command using a terminal shell command:

    /Applications/kstars.app/Contents/MacOS/dbus-send --system --print-reply --dest=org.kde.kstars /KStars org.kde.kstars.setTracking boolean:true

I get this message:

    Failed to open connection to "system" message bus: Socket name too long

What am I doing wrong? How can I determine the "socket name" to figure out why it might be too long?

Any help appreciated.

Paul