error in "Url" ajax "url: '/',"

When JavaScript is executed the Url is replaced by "url: '/'," so it is impossible for me to return the values from my controller to the script

Does anyone know what is causing this problem?

Code:

<script type="text/javascript">
    $(document).ready(function () {
    $('#logbtn').click(function (e) {
        var pin = $('#Pin').val();

        console.log(pin);
    $.ajax({
        type: "POST",
        data: {Pin: pin},
        url: '@Url.Action("Login", "Ttraslados")',
        dataType: "json",
        success: (function (r) {
            console.log(r.Message);
            switch (r.Message) {
                case "Error1": swal("¡Cuidado!", "Este campo no puede estar vacio y el PIN solo deben ser numeros", "success"); break;
                case "Error2": swal("Oops!", "El usuario es incorrecto o inexistente", "error"); break;
                default: swal("Oops", "Error inesperado", "error");
            }
         }),
           error:(function () {
             swal("Oops", "Hubo un error", "error" );
         })
    });

        });
    });

</script>

and this is the code when it is executed

 $(document).ready(function () {
    $('#logbtn').click(function (e) {
        var pin = $('#Pin').val();

        console.log(pin);
    $.ajax({
        type: "POST",
        data: {Pin: pin},
        url: '/',
        dataType: "json",
        success: (function (r) {
            console.log(r.Message);
            switch (r.Message) {
                case "Error1": swal("¡Cuidado!", "Este campo no puede estar vacio y el PIN solo deben ser numeros", "success"); break;
                case "Error2": swal("Oops!", "El usuario es incorrecto o inexistente", "error"); break;
                default: swal("Oops", "Error inesperado", "error");
            }
         }),
           error:(function () {
             swal("Oops", "Hubo un error", "error" );
         })
    });

        });
    });

the variable "url" stores only one slash.

copy this script from another that I had already made it work correctly