Sorry for the delayed response, I have been on paternity leave for the last two weeks 😊
Thanks @Heather-Mitchell for the update. PracticeLabs has fixed the problem, and the lab should complete successfully now.
The error you were receiving from sysprep is caused by Microsoft Store apps. There are several built-in Microsoft Store apps in a Windows 10 image. These provisioned apps are configured to install for every user at first logon. They are also updated in the background automatically.
The problem can occur if the system you are trying to run sysprep and the built-in apps are still being installed or are being or have been updated. The application files will be in use, and sysprep will not be able to remove them, and will fail (error 0x80073cf2, which you can see in the line after the one you highlighted).
Basically, to fix the problem, you need to remove the AppxPackage (Remove-AppxPackage) from all users, and remove the provisioning of the AppxPackage (Remove-AppxProvisionedPackage). These steps and cmdlets have been added / updated in the PracticeLabs.
For more information, look here: https://docs.microsoft.com/en-us/troubleshoot/windows-client/deployment/sysprep-fails-remove-or-update-store-apps
**if the post above has answered the question, please mark the topic as solved.