Navigation to new ASP.NET Core 6 Razor Page Fails

I have an existing ASP.NET Razor Page application in Visual Studio 2022. When I add a new Razor Page I cannot navigate to it. I get a page not found error when I type the URL in the browser and when I try to link to it in code. I have pages previously created that perform as expected. What has changed? How do I fix this issue? Thank you.