JobExecutionException

Hi - I have a PowerShell script to discover interfaces which has been working fine but is now suddenly throwing .Net exceptions, I wondered if anyone had any ideas what is going on or how I can fix it?

Code is as follows:

This bit works fine & I get the nodeID back:

# Ensure Machine exists in Solar Winds

$myNodeID = Get-SwisData $swis "SELECT NodeID FROM Orion.Nodes WHERE NodeID='$nodeID'"

if ($nodeID -eq $null) {

    Write-Output "Error - device NodeID $nodeID does not exist in Solar Winds"

    exit 0

}

Write-Output "nodeID: $myNodeID"

This throws an exception:

# Discover interfaces on the node

$discovered = Invoke-SwisVerb $swis Orion.NPM.Interfaces DiscoverInterfacesOnNode $nodeId

if ($discovered.Result -ne "Succeed") {

  Write-Host "Error - Interface discovery failed."

}

Exception:

Invoke-SwisVerb : SolarWinds.JobEngine.WorkerProcess.JobExecutionException: System.ArgumentNullException: Value cannot be null.

Parameter name: credentials

   at SolarWinds.Orion.Pollers.Framework.SettingsHelper.ValidateCredentials[TCredentials](Credential credentials)

   at SolarWinds.Orion.Pollers.Framework.SNMP.SnmpInventoryBase.DoInventory(GlobalSettingsBase globalSettings, SettingsBase nodeSettings, InventorySettingsBase inventorySettings, Credential credentials)

   at SolarWinds.NPM.DiscoveryPlugin.Activities.InterfacesSnmpInventoryStep.DoNpmDiscovery(NpmDiscoveryConfiguration cfg)

   at SolarWinds.NPM.DiscoveryPlugin.NPMLiteDiscoveryPlugin.<DoDiscovery>d__0.MoveNext()

   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)

   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)

   at SolarWinds.NPM.Jobs.DiscoveryJob.Execute(IJobExecutionHost host)

   at SolarWinds.JobEngine.WorkerProcess.Job2Adapter.Execute(IInternalJobExecutionHost host)

   at SolarWinds.JobEngine.WorkerProcess.Job2Adapter.Execute(IInternalJobExecutionHost host)

   at SolarWinds.JobEngine.WorkerProcess.JobDecorator.Execute(IInternalJobExecutionHost host)

   at SolarWinds.JobEngine.WorkerProcess.AgentDispatcher.ExecuteJobSynchronously(ActiveJob activeJob)

   at SolarWinds.JobEngine.WorkerProcess.AgentDispatcher.ExecuteJob(ActiveJob activeJob)

   at SolarWinds.JobEngine.WorkerProcess.AgentDispatcher.WorkItemDispatched(Object state)

   at SolarWinds.JobEngine.WorkerProcess.Job2Adapter.Execute(IInternalJobExecutionHost host)

   at SolarWinds.JobEngine.WorkerProcess.JobDecorator.Execute(IInternalJobExecutionHost host)

   at SolarWinds.JobEngine.WorkerProcess.AgentDispatcher.ExecuteJobSynchronously(ActiveJob activeJob)

   at SolarWinds.JobEngine.WorkerProcess.AgentDispatcher.ExecuteJob(ActiveJob activeJob)

   at SolarWinds.JobEngine.WorkerProcess.AgentDispatcher.WorkItemDispatched(Object state)

At D:\AegisScripts\SolarWinds\DiscoverInterfaces.ps1:38 char:30

+ $discovered = Invoke-SwisVerb <<<<  $swis Orion.NPM.Interfaces DiscoverInterfacesOnNode $nodeId

    + CategoryInfo          : InvalidOperation: (:) [Invoke-SwisVerb], FaultException`1

    + FullyQualifiedErrorId : SwisError,SwisPowerShell.InvokeSwisVerb