What should I do if I can't preview the photographic works and prompt the data crops?

Data loss. It is recommended to look directly at the pictures on the CF card. If there is no problem, try again. Use Photoshop to see if you can force it to open. In many cases, files with missing data can be opened in Photoshop, and you can see two-thirds of the pictures, and the other third is gray, depending on how much data you have lost. If you lose less, just cut it and make do ~