Question Unable to restore backup

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From terminal I created a plesk backup for a domain:
/usr/sbin/plesk bin pleskbackup domains-name mysite.com --output-file 20180330.xml

I would like to restore this backup:
plesk bin pleskrestore --restore 20180330.xml -level domains

But I get this error:
PHP Warning: XMLReader::read(): /var/lib/psa/dumps/domains/shop-marzanodigullaci.com/:1: parser error : Document is empty; File: /opt/psa/admin/plib/backup/RestoreMapping.php, Line: 269
PHP Warning: XMLReader::read(): dump-header; File: /opt/psa/admin/plib/backup/RestoreMapping.php, Line: 269
PHP Warning: XMLReader::read(): ^; File: /opt/psa/admin/plib/backup/RestoreMapping.php, Line: 269
pleskrestore allows to restore dumps which contain at least one of following objects: server, reseller, client, domain