Your Sony Version does not match any on the Supported list
Cameras supported by Camera Raw You need to be more specific on the Sony model.
Probably your camera was released after the version of LR 6 that you have installed. LR6.14 is as far as you can go to get support with a perpetual license. If your camera was released after that, then you will need to either upgrade Lightroom to a Subscription or convert your ARW files to DNG using the free DNG converter.
The Same thing will exist with your OS The Current release of MacOS is 10.14.x. Obsolete (legacy) versions of the operating systems will not have CODECs upto date with newer cameras.