Hi alialv,
Thanks for participating in the Apple Support Communities.
It looks like you're syncing your iPhone using iTunes but you see a message that your photo library isn't available. Have you recently upgraded to OS X El Capitan (or OS X Yosemite 10.10.5)?
If you're using Photos for Mac, make sure to Designate a System Photo Library in Photos.
For previous versions of OS X and/or iPhoto, feel free to let us know what versions you're working with.
Best Regards.