Images Data Merge are Blank BUT Don't Throw an Error

I have been trying to figure this out for several days now. I’m using 2025 InDesign on a Mac. I have one merge file with images that works just fine and I use it all the time. I’m trying to set up a separate merge file with a lot more images. I fixed several errors that were causing me to get the “missing image” error. Despite all that, I now get no errors but a merge file with text and blank boxes where the images should be. I have noticed one other difference between the merge file that works and the one that doesn’t: In the working one, my image frame has the correct column name <<logo>> inside the frame where the image should be, but the one not working does not display any text. Would be so grateful for a solution!

And just to cover my bases, yes the column has an @ sign, and yes, I tried putting the spreadsheet in the same folder as the images and using the image file name, which got me the same result: No errors, but the frames are still blank after merge. I even checked and the frame content type is set to graphic, so I’m totally at a loss.