server backups failing in veeam

[Uber22]

Hey

 

i have been having some issues the last couple of days trying to get veeam to backup, so i have spoken to there support and they said its caused by checkpoints.

 

so i ran this command( Get-WinEvent -FilterHashTable @{LogName ="Microsoft-Windows-Hyper-V*"; StartTime = (Get-Date).AddDays(-1); Level = 2}) and this come back

 

23/07/2019 00:12:06 19100 Error 'PINWHEEL' background disk merge failed to complete: The process cannot access the fil...23/07/2019 00:12:06 18012 Error Checkpoint operation for 'PINWHEEL' failed. (Virtual machine ID 847B9DCE-4FAE-4CDB-B86...23/07/2019 00:12:06 18014 Error Checkpoint operation for 'PINWHEEL' was cancelled. (Virtual machine ID 847B9DCE-4FAE-4...

 

has anyone had these issues before i cant even see why this has just all of the sudden gone wrong.