The route template separator character '/' cannot appear consecutively - Attribute routing issue

Question

The configuration has nothing to do with the error

This is my configuration for the Web API in App_Start/WebApiConfig.cs:

public static void Register(H         


        

Answer 1

I was receiving this issue with a combination of a [RoutePrefix] and a [Route] on an action.

[RoutePrefix("/api/my/application")]

on the action I had

[HttpPost, Route("{someVariable:int}"]

When I changed: [RoutePrefix("/api/my/application")]to[RoutePrefix("api/my/application")] everything was fine.