Google Photos Android app hang on "Setting up your photo library"

You need to delete 0 byte files, even in folders not selected to sync/backup

这是 Google Photos Android app 的1个 bug，截止目前 (2021-12-17) 仍未修复。临时解决方法是删除主存储目录里所有 0 字节的文件。

adb shell
cd /sdcard
find . -type f -size 0 -name "*.*" -delete