Airplay is Off with no option for turning On
I have a mid-2012 macbook pro and I have Airplay Display listed in my monitor section with a menu to turn it off or on, but only off is an option.
I haven't tried using it before, it used to be up in my menu bar (years ago) and isn't anymore. I'd like to use it with my ipad pro.
I'm on macOS Catalina 10.15.5
How can I fix this?
Thanks,
Aaron