Your folks are really great. They are so professional and appear to enjoy what they are doing. They seem to be very happy. It’s a pleasure to have them here.
The fix was quite easy. The feed for the failed landscape light circuit came off an old exterior outlet. Over 35 years that original plug in the outlet got corroded. I thought the problem might be in that outlet as the plug didn’t work but all the electrical sources upstream of the outlet did. Your guy immediately diagnosed the problem and promptly fixed it.