XmlSerializer throws exception in Azure Functions v2 but not elsewhere

The line of code in this code block where the XmlSerializer tries to deserialize the XML throws an exception when invoked by a v2 Azure Functions app but succeeds when invoked by other .NET apps; e.g., ASP.NET, Windows Service, Windows Forms. The Azure function and other apps are all targeting .NET 4.8. The same code block also succeeds in Azure Functions v1 targeting .NET 4.7.

```
public static Obj GetRootObjFrom(string xml)
{
try
{
if (xml != null)
{
var xmlDoc = XDocument.Parse(xml);
var obixTypeDef = typeof(Tridium.Obj);
var reader = new StringReader(xml);
var deserializer = new XmlSerializer(obixTypeDef, xmlDoc.Root.Name.NamespaceName);
var obixObj = (Tridium.Obj)deserializer.Deserialize(reader);
return obixObj;
}
}
catch (Exception ex)
{
// TODO: Log exception.
}
return null;
}

```
This is the XML content that I am testing with:

```

```
This exception is thrown:

The ReadElementContentAsString method is not supported on node type Attribute. Line 3, position 73.

I am developing the Azure function under Windows 10 using the following:

VS.NET 2019 Pro v16.1.6
Microsoft.NET.Sdk.Functions v1.0.29
Microsoft.Azure.WebJobs v3.0.10
Microsoft.Azure.WebJobs.Extensions.ServiceBus v3.1.0-beta3

I generate the Tridium.Obj class in the code block using the pro version of the xsd2code++ VS.NET extension from XSD schema derived from: http://obix.org/ns/schema/1.0.