Backup failing

Had backup working fine on external NAS ;but had to change somethings.
Doesn’t work now. Can’t find the json file.
What should this be? and where should it be?

Any guidance appreciated

The file is inside the backup tar file.

check to make sure that ha has read/write access /data/backups and /data/mounts/Backup

then open the tar and make sure the .json is in the . folder in the tar