Google photos says 'photos left to backup' but won't backup in MIUI 10

Mar 4, 2018
I have 2 phones mi5 and redmi 3s, and mi5 has miui10 eu and redmi 3s has miui 9. and the problem i'm facing with the mi5 miui10 version.
i already cleared cache and all data then reset google photos for many times but that didn't work for me. i tried a lot but that dose not back up my photos and after installing miui 10 i took 27 photos and google photos says me every time that 27 photos left to backup, and looping all the time. but I've the same account setup in my redmi 3s and whenever i take a photo google photos quickly backup it. but the problem is with the mi5 miui 10 version. so please can you give me a suggestion??IMG_20180702_210214.jpgIMG_20180702_210158.jpg