Panoramas I've taken the past few days have disappeared.

[AC Question]

On my Nexus 5, I've taken many panoramas and photosphere's in the past. They seemed fine even a few days ago. I attempted to take several yesterday and today (in addition to lots of normal pics). I attempted to transfer today and yesterday's work to my PC and all the IMG files are there but none of the PANO files. If I use Windows 10's Search function on Internal Storage, It shows the missing file names as folder names in TEMP_SESSIONS in Android/data/com.google.andriod.GoogleCamera/cache and nowhere else. Each of the folders has a jpg file in it, but it only consists of the panorama symbol.

My phone is Nexus 5 with all the latest updates.