Driver Error: Tun & Tap System

I am using Watchguard Firebox Mobile VPN with SSL, version 12.0 on an Apple Macbook Pro with macOS 10.14. When I open Firebox, there is a popup that says "Drive Error: The tun & tap system extensions may not be properly installed" and has the options to Continue or Quit. If I continue, the program works fine to my untrained eye. Is this something I need to address, and if so, how?

Note: I am not trained in IT, but I'm generally knowledgeable with technology. I am not the system administrator for my company's Firebox subscription.


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