AutoSPInstaller is a great project that facilitates Automated SharePoint installation including Sharepoint 2010, 2013, 2016 and 2019.
Auto SP Installer provides a powerful way to deploy and configure a
single-server development environment to multiple-server SharePoint farm.
There is a chance when running the AutoSPInstaller scripts, you will get a warning that the XML and script version is mismatched.

In the XML file, by default, the version of the XML header will be 3.99.70. A warning will appear to advise that the version of the XML does not match the script.

Resolution:
Ignore the Warning as this is just that, a warning. This does not affect the function of the script.