Route templates for https://learn.microsoft.com/en-us/aspnet/core/mvc/controllers/actions#defining-actions[ASP.NET controller actions], defined via a https://learn.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.mvc.routeattribute[`RouteAttribute`] or any derivation of https://learn.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.mvc.routing.httpmethodattribute[`HttpMethodAttribute`], should not start with "/".
