Google Direction-API-Fehler (NOT_FOUND)

Ich habe eine Frage bezüglich der Google API Richtung mit Javascript, ich es zum ersten Mal bin mit.

Ich developping eine Mitfahrzentrale Website. Ich möchte eine Richtung zwischen zwei Orten zu schaffen, die ich von einem Eingang bekam mit Google automatischer Vervollständigung. Ich habe es geschafft, meine zwei LatLng-Koordinaten zu erhalten, dass ich als String übergeben in den Herkunfts- und Zielfelder zu setzen. Doch es Echos „Directions Anforderung aufgrund NOT_FOUND fehlgeschlagen“. Kann mir jemand helfen? Vielen Dank :)

HTML Felder

<input type="text" name="departure"  id="autocomplete_address">
<input type="button" id="departure_check" value="Add this departure">

<input type="text" name="arrival"  id="autocomplete_address2">
<input type="button" id="arrival_check" value="Add this destination" >

Javascript:

var latorigine;
var latdestination;

function initMap() {
    var geocoder = new google.maps.Geocoder;
    var directionsService = new google.maps.DirectionsService;
    var directionsDisplay = new google.maps.DirectionsRenderer;
    map = new google.maps.Map(document.getElementById('searchmap'), {
        center: {lat: 50.437616, lng: 2.809546},
        zoom: 15
    });

    directionsDisplay.setMap(map);       

    //AUTOCOMPLETE
    var departure_input =(document.getElementById('autocomplete_address'));
    var arrival_input =(document.getElementById('autocomplete_address2'));
    var options = {
        types: ['address'],
        componentRestrictions: {country: "fr"}
    }
    var departure_autocomplete = new 
    google.maps.places.Autocomplete(departure_input,options);
    var arrival_autocomplete = new 
    google.maps.places.Autocomplete(arrival_input,options);

    document.getElementById('departure_check').addEventListener('click', function(latorigine) {
        var departure_place = departure_autocomplete.getPlace();
        latorigine = ' " '+ departure_place.geometry.location.lat() + ", " +  departure_place.geometry.location.lng()+ ' " ';
        console.log(latorigine);
    });

    document.getElementById('arrival_check').addEventListener('click', function(latdestination) {
        var arrival_place = arrival_autocomplete.getPlace();
        latdestination = ' " ' +arrival_place.geometry.location.lat() + ", " + arrival_place.geometry.location.lng()+ ' " ';
        console.log(latdestination);
    });

}
//END INITMAP


function trajectdirection(directionsService, directionsDisplay,latorigine, latdestination) {
    directionsService.route({
        origin: latorigine.toString(),
        destination: latdestination.toString(),
        travelMode: 'DRIVING'
        }, function(response, status) {
            if (status === 'OK') {
                directionsDisplay.setDirections(response);
            } else {
                window.alert('Directions request failed due to ' + status);
            }
        }
    });
}