Api in subfolder not working

[Doxoh]

🐛 Bug Report

If the dotnet core MVC api is in an subfolder then stuntman endpoints not available.

To Reproduce

Steps to reproduce the behavior:

• Setup dotnet core 3.1 project.
• In startup
  `var options = new StuntmanOptions("/TEST");
  services.AddStuntman(StuntmanOptions);

app.UsePathBase("/TEST");
app.UseStuntman(StuntmanOptions);

`

Expected behavior

Under http://localhost:44349/TEST/sign-in the sign in page is available.

Screenshots and/or request snippets