Fix error when consulting WebService, axios, javascript?

Good afternoon I have to make a query with the axios.get method, but it gives me the following message:

{
    "Message": "No HTTP resource was found that matches the request URI 'https://URL/api/Metodo'."
}

I'm trying to solve it in the following way:

var nueva_url = encodeURI('https://URL/api/Metodo');

    obtenerAsignaciones(nueva_url);
         function obtenerAsignaciones(nueva_url) {
            myApp.showIndicator();
             return new Promise((res, rej) => {
                axios.get(nueva_url, {
                    headers: {
                        Authorization: token_type + " " + access_token
                    }
                }).then(function (response) {
                    console.log(response);
                    myApp.hideIndicator();
                }).catch(function (error) {
                    console.log(error)
                })
            })
        }

But I keep generating the same message

What could it be? Thanks.