Unable to HDR Pano merge

I took 24 pictures total, 8 shots with 3 exposures and tried to HDR Pano merge with no success.

The first issue I ran into was selecting all 24 photos and HDR merging them didnt include one of the 8 frames on the right most side. Then I thought of HDR merging the 24 shots to make 8 HDR shots to then merge into Panorama mode, but now it wont even complete. It gives Unable to merge error.

I tried both HDR panorama merge and regular panorama merge on 8 HDR shots, neither worked.