Hi Jeff Landis,
Thank you for reaching out to Microsoft Q&A forum.
Better whenever you start the lab don't open other windows until the lab completes.
Can you please check your internet connection. Try to clear all the browser history and if that doesn't work, try using incognito mode.
A suggestion for conducting laboratory work. It advises against opening additional windows or distractions during the lab session. The implication is that focusing solely on the lab task at hand without diverting attention elsewhere will lead to better outcomes or efficiency.
We tried from our end; it's working fine for us. Kindly check the below screenshots. Please follow the lab instructions, whatever mentioned in the right side when you launched the Lab.
If you are still facing any issue, please let us know in the comments and where you are encountering this error along with the screenshot for reference. We are glad to help you.
If the information is helpful, please Accept Answer so that it would be helpful to community members.
Thank you.