Symptoms
Task 'Create Customers VPS scheduled backups' fails with error 'Host #host_id does not exist':
Task ID 123456
Task name Create Customers VPS scheduled backups
Task description Find all VPSes that are scheduled for backup for current time and create backups of those VPSes. Task process only customer's VPSes for VPS Hosting for customers with 'Scheduled VPS backup' service included into Subscription.
Queue status Rescheduled
Start not earlier than Jan-01-2013 12:00
Method name taskPeriodicalVPSBackupStarter on SCREF:VPSTasks:0
Last execution output Host #123 does not exist.
Cause
Task failed due to a database inconsistency: a VPS is being removed from POA but removal has not been processed completely, some stale records still exist in database. This could be caused by canceled/unprocessed tasks to remove a VPS.
Resolution
The issue is fixed in POA 5.4 update 14. Install this update once it is available. You can also locate unprocessed (canceled, failed, etc.) tasks to remove a VPS in a task queue and process them.