Wix0200 error when trying to include NetFxExtension on Wix v5

[JosephHerreraDev]

I want to verify that .net 8 is installed on the end user system to install my software.
I installed the nuget package: WixToolset.Netfx
I include the namespace
xmlns:netfx="http://schemas.microsoft.com/wix/NetFxExtension"
and the code from the example from the page
<netfx:DotNetCompatibilityCheck Property="DOTNETRUNTIMECHECK" RollForward="major" RuntimeType="desktop" Platform="x64" Version="8.0.0" />
But every time I try to build the installer it displays the following error:
The Package element contains an unhandled extension element 'DotNetCompatibilityCheck'. Please ensure that the extension for elements in the 'http://schemas.microsoft.com/wix/NetFxExtension' namespace has been provided.
What can I do? Thank you for the help

[Thylon1]

You cannot place a <netfx:DotNetCompatibilityCheck /> element directly inside a package element, which causes the Wix0200 error.
You can only put it below a Bundle or Fragment element as seen in the documentation.

You should also probably use the namespace xmlns:netfx="http://wixtoolset.org/schemas/v4/wxs/netfx" to include netfx instead of xmlns:netfx="http://schemas.microsoft.com/wix/NetFxExtension".