Please follow the below steps:
1. Network abnormalities
Change the network and try again.
2. Insufficient storage space of Google Photos
Try emptying the cloud storage space with the following methods:
1) Enter Google Drive, delete invalid files, and clean up the storage space.
2) Enter Google Photo>Find low-value pictures>Select to delete. Enter Library>Trash>Select Picture> Permanently Delete, release space.
3) Enter Google Photo>Avatar in the upper right corner>Account Storage>Review and Delete to delete invalid files.
3. Expand Google storage space
Desktop>Google Drive>More in the upper left corner> Buy Storage. You can choose the corresponding package for paid expansion.
Reminder: you need to pay for the storage expansion.
If the issue persists, contact the Nothing Support Team for further assistance.