Problem with stacking using "merge to panorama in Photoshop"

I have edited the first pic in a series of 555 of the North America Nebula, in LR. After I was done editing, I selected all the other pics and copied the edit, synchronized (checking all the boxes), then attempted to transfer them to PS, using the "merge to panorama in Photoshop" function. When the next screen pops up in Photoshop, unclick the blend option, then hit okay. The process begins, and I can see it going through every single photograph. It finishes, then nothing. Photoshop goes to its home screen. There are no dialog boxes. No error messages. Both PS and LR function normally, so there is no indication that either of them is attempting to continue to work on anything. I look through my files and I can't find any evidence that anything even happened. I've done this three times, with the same result. What am I missing? What additional setting is there that I need to check on. I would assume that if there was any kind of error, that there would be some sort of message telling me that the program could not continue. I am completely at a loss. I know that I can stack the photos in a different program then open it in PS, but I wanted to try this method. I am using Windows 10, completely up to date, as of 3/16/21. Adobe suite is completely up to date as well.