Struggling to take backup


I’m struggling to take a backup of HA. I have linked the backup-process direct to Google drive, and set up automatically backup once a week. But HA never boots up again after backup, so I need to cut the power to get the connection back. And when it’s back online some GB has disappeared and none backup is made. Some other that have the same issue or now what I can do to fix the issue? I have no logs because of now reboot… I am going to move HA to an new SD-card but need the backup to be made befite moving.