Q: syncing error status in photo app (in ipad air) after sync through itunes

after syncing from itunes to ipad air, the photos (8000+photos , with separate folders) does not transfer, and keep giving status Syncing... when i open photo app in ipad air. how do i transfer all my pictures into my ipad now?

after syncing through itunes, the folders are all empty and Syncing... message keeps appearing