Someting went Wrong Your files might not have been imported

I was having trouble with pc windows 10 and used this link

https://support.apple.com/en-us/HT201302?&cid=acs::fm-itunes_HT201302

This pc method didn't work for some reason I was prompted something went wrong your files might not have been imported.

So went to iTunes connected my phone and I clicked on the iPhone in iTunes, but in iTunes under settings photos wasn't available. so I downloaded icloud. set up settings in icloud and iPhone and used iTunes once more. I worked the importance of icloud, without you wont see photos available under settings in iTunes iPhone summary. I struggled with this for 1year. photo sync issues. please do more tutorials with showing how important icloud is. thanks guys you are amazing.