Ok, i tried to import the image with the same name and it seems it is not such issue. Maybe it depends on the way, how your images are structured.
Are you using separate folders for the images and labels or are they in the same folder?
Also, have the images with the same name the labels, too?
The easiest (but maybe time consuming) way will be to create unique names for your images.
Just to check, are you getting the error also on data you sent me? If so, can you move the labelled images to the original images’ folder and then provide the operation?