Backup task failed with the error: "pmm utility 'PMMCli' raised an exception. Error code is: -1"

Symptoms

1) When I try to back up any subscription, the task fails with the following error:

    Error: pmm utility 'PMMCli' raised an exception. Error code is: -1
    See pmmcli.log to find out detailed information on this

The following command returns at least one row with the domain name:

"%plesk_bin%\\dbclient.exe" --direct-sql --sql="select domains.id, domains.name, clients.login from domains left join clients on clients.id=domains.cl_id where clients.login is NULL"

2) There is another possible symptom in Parallels Plesk Panel (Plesk) for Linux. In the backup logs (/usr/local/psa/PMM/logs/backup-2014-03-01-09-35-55-384/backup.log), you get the following error:

Runtime error: Unable to find Plesk versionfile: /usr/local/psa/version at /usr/local/psa/PMM/agents/PleskX/PleskVersion.pm line 18.
 at /usr/local/psa/PMM/agents/PleskX/PleskVersion.pm line 18

Cause

1. The issue is caused by an inconsistency in the Plesk database.

2. The file /usr/local/psa/version is absent.

Resolution

1. Back up the database:

   "%plesk_dir%\\MySQL\\bin\\mysqldump" -P8306 -uadmin -pPleskAdminPassword --databases psa > c:\\Users\\Administrator\\plesk_db_backup.sql
   

2. Set the Plesk Administrator as the owner of every domain, returned by the " dbclient " query in the Symptoms section of this article (replace N in the request with the id of the domain):

   "%plesk_bin%\\dbclient.exe" --direct-sql --sql="update domains set cl_id = (select id from clients where login = 'admin') where id = N"
   

3. If the task fails in Plesk for Linux and the issue is not in the database, make sure that /usr/local/psa/version exists. It should have content like the below:

   # cat /usr/local/psa/version
   11.5.30 CentOS 6 115131204.15