Lightroom unable to stitch all photos

In your screenshot of images showing the overlap, not sure how first image, second row would stitch to any other image. LrC probably could not include that one at a minimum.

Exclude that one in your selection, attemt the Merge Photo PANO.

I came back from my sunrise flight 

As in flying your Drone, not as in flying Air Alaska. Just to mske sure noone assumes the latter.

SOme of the images have very little structure to them to make overlap. Image 7 for example I would not expect to stitch with the rrest very well. The panorama stitcher is notoriously bad at finding overlap in images that have a flat horizon and little detail below the horizon.

A couple others have reported problems stitching DJI panoramas:

https://community.adobe.com/t5/lightroom-classic-discussions/dji-mavic-pro-blur-pano-when-stitching/m-p/11940574 

In those cases, the DJI camera was incorrectly recording the exposure for some of the photos. (LR relies on correct exposure information for doing the merge.)   

Next troubleshooting steps:

- Upload a sample set of photos to Dropbox or similar and post the sharing link here.  We can poke around in detail to see where the problem might be (in LR or the camera's metadata).

- Try doing Photo > Edit In > Merge To Panorama In Photoshop. Does that give good results?

Heres another example showing the images have overlap.

@richard_kain . Hi Richard. I use DJIs pano feature so the drone does it accurately automatically. I have a series of albums with like 1% flaw rate. However today. Drone took panos no different. They all overlap as I seen each file. Today 50% of my panos taken haven’t been able to stitch. Lightroom just says. X out x images unable to merge. 

I doubt it had to do with the update. I think your problem is that you are flying, so the camera is not in the same position, and the photos do not overlap properly, so the merge fails. Merges do work if the camera mover a tiny bit, as in handheld situations, but if you get too far off, it won't be able to merge them.