Mi Mix phone photo upload stopped ---- google photos

 It used to be working automatically after I entered my google details

suddenly it stopped

I have to manually start google photos app. and trigger the upload

1. 1. On your Android phone or tablet, open the Google Photos app .
   2. Sign in to your Google Account.
   3. At the top right, tap your account profile photo or initial.
   4. Select Photos settings. Back up & sync.
   5. Tap "Back up & sync" on or off.
   On your Android phone or tablet, open the Google Photos app .
2. Sign in to your Google Account.
3. At the top right, tap your account profile photo or initial.
4. Select Photos settings. Back up & sync.
5. Tap "Back up & sync" on or off.