Fix handling empty error messages

scripts/Common/Scripts/Operations.ps1

@@ -141,9 +141,12 @@ $null = New-Module {
         if (Test-Path $errorPath) {
             $errorMessage = Get-Content $errorPath;
             Remove-Item $errorPath;
+
+            if ($errorMessage) {
                 Write-Error $errorMessage;
             }
         }
+    }
 
     # ToDo: Store Run-OneShot and Receive-OneShot somewhere else in Windows folder