New-UDGrid - VMware - An item with the same key has already been added

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I am trying to get a list of snapshots to show up and I get the “An item with the same key has already been added.” when I try to populate new-udgrid… Here is my code as I am unsure where to go from here.


Get-UDDashboard | Stop-UDDashboard

$null = Set-PowerCLIConfiguration -DefaultVIServerMode Multiple -Scope User -Confirm:$false
$Cache:Creds = Get-Credential -Credential $(whoami)

#####
$Every60Sec = New-UDEndpointSchedule -Every 60 -Second
$Schedule = New-UDEndpoint -Schedule $Every60Sec -Endpoint {
    $Cache:EndpointError = $false
    $Cache:vCenterServer = 'vcenter.domain.org'
    if (!($global:DefaultVIServer.Name -eq $Cache:vCenterServer)){
        try{
            $Cache:VCSession = Connect-VIServer -Server $Cache:vCenterServer -Credential $Cache:Creds -ErrorAction Stop
        }
        catch{
            $Cache:EndpointError = $_.Exception.Message
        }
    }
    $Cache:ViServerList = $global:DefaultVIServer
}

$pages = @()
$pages += New-UDPage -Name "home" -Content {
    New-UDRow {
        New-UDCollection -Content {
            New-UDCollectionItem -Content {"PS Version: $([string]$PSVersionTable.PSVersion)"}
            New-UDCollectionItem -Content {"Host: $($Host.Name)"}
            New-UDCollectionItem -Content {"OS: $((gwmi win32_operatingsystem).caption)"}
            New-UDCollectionItem -Content {".Net Version: $((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full').Release)"}
        }
    }
    New-UDRow {
        New-UDCard -Title "PowerCli Version" -Content {
            Get-Module -ListAvailable | where{$_.Name -eq 'VMware.VimAutomation.Core'} | foreach{
                New-UDRow{"$($_.Name) - $($_.Version) - $($_.Path)"}
            }
        }
    }
    New-UDRow -Endpoint {

        New-UdGrid -Title "Snapshot" -Headers @("VM", "Created", "Name", "Description") -Properties @("VM", "Created", "Name", "Description") -Endpoint {
            $null = Connect-VIServer -Server $Cache:ViServerList.Name -Session $Cache:ViServerList.SessionSecret
            $Snapshot = get-vm | get-snapshot | Select-Object vm, created, Name, Description
            $Snapshot | Out-UDGridData

         } 

    }
}

$Dashboard = New-UDDashboard -Title 'vmware test' -Page $pages
Start-UDDashboard -Port 10001 -Dashboard $Dashboard -Endpoint @($Schedule)