I didn’t find a lot of help with this issue, so I am putting in here in the event this solution is of service.
I encountered an error when exporting to pdf from InDesign. “Error encountered while reading JPEG image.”
What worked was exporting each page as a jpeg and seeing which one wouldn’t export.
Then, I opened the jpegs on that page until I found one that wouldn’t open in Photoshop. I’m not sure how the file was corrupted, but it was. Finding the original file and placing it back in InDesign worked.