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Act as a wordpress developer and expert, I want to upload csv file with external  image link and store the data into the database table,  because you know the csv can not contain the image, review the code file that I uploaded, here is what I want to achieve, I want to when I add an external image link in the photo column  it will download the image and upload it into the media libeary , and the photo field value data in the table will become the image link of the attachmen file link,