Couldn't restore configuration - action failed (6)

I have done full reset of my settings and I wanted to restore my backup file.
I have done it from console by:

/system backup load name=flash/backup_file.backup

I put password and after that I have seen following error:

Couldn't restore configuration - action failed (6)

Generally I couldn’t restore my configuration from backup file.
What went wrong with it?

Router OS version: v6.38.1 (stable)

I noticed that system backup does not work at all.
I have just reset mikrotik hap ac to default configuration and when I try to make backup and restore it I see the following error (the same error):

[admin@MikroTik] > /system backup save name=mybackup
Saving system configuration
Configuration backup saved
[admin@MikroTik] > /system backup load name=mybackup.backup 
password: *****
Restore and reboot? [y/N]: 
y
Restoring system configuration
Failed to restore system configuration
action failed (6)

What is wrong with it guys?

That password is a backups password, not a user password. You did not specify any password on backup save, so you should leave it empty on backup load as well.

Password was ok but the filesystem was broken.

I restore full system by the netinstall tool (there is a repartitioning procedure) and now everything is OK.

I am also faces of this problem please check attach file
26754405_2087584221487653_5250850_n.jpg