"Error: pmm utility 'PMMCli' raised an exception. Error code is: -1"

Hi Plesk Users,

I have a problem on Plesk 11.5 version in Windows server 2008

Getting below error during backup setup

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


pmmcli.log details
++++++++++++++++++++++++
[2017-04-26 21:40:44.278|40856] DEBUG: LOG: custom log C:\Program Files (x86)\Parallels\Plesk\PMM\logs\backup-2017-04-26-21-40-44-488\backup.log
[2017-04-26 21:40:44.313|40856] INFO: Executing...

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