Build succeed in VSCode, failure in cmd

[planyway]

As suggested, I simply pressed F5 in VSCode, after that, a whole bunch of words come out, taking at least 5 seconds till I see the green words implying the build is successful. When I visit localhost:5000, I can see the website, which is great. However, when I try to do "dotnet run" in cmd, the green words implying a successful build show within a second, which seems to be too fast, and when I visit localhost:5000, I get the error:

"System.InvalidOperationException: The SPA default page middleware could not return the default page '/index.html' because it was not found, and no other middleware handled the request"

Is it that my node.js, or something skipped when running "dotnet run" in cmd? Or is it that I missed a command?