backup issue

[urgido]

Hi
I am trying to restore a backup files but I got the following error:

Unable to extract the directory 'backup' from the file /home/tmp/admin.OS91l9PKbdkvkOTSDuIP3Pw9AKyJZEow/user.admin.confia.tar.zst as user confia
/*stdin*\ : Read error (39) : premature end
/bin/tar: Fin de fichero inesperado en el archivo
/bin/tar: Fin de fichero inesperado en el archivo
/bin/tar: Error is not recoverable: exiting now

File '/home/tmp/admin.OS91l9PKbdkvkOTSDuIP3Pw9AKyJZEow/user.admin.confia.tar.zst' was 35189301248 bytes in size, as read by root.

Also, I try with different backups generated on different time but the result is the same.

Never had problems to restore backups until now.

Any clue?
Thanks