After uploading the file, an empty array is returned, and no address is returned

[wenming5112]

NamedStreamable.FileWrapper saveFile = new NamedStreamable.FileWrapper(new File("E:\\guaranty\\233ade8f1076f5b3f8a4a02def39d1ef.png"));
        for (MerkleNode result : ipfs.add(saveFile)) {
            System.out.println(result.toJSONString());
        }

return {"Links":[]}