i am trying to get a route but the request fails each time . using mapbox

[binarysmith1719]

mapboxNavigation.requestRoutes(
        RouteOptions.builder()
            .applyDefaultNavigationOptions()
            .applyLanguageAndVoiceUnitOptions(this)
            .coordinatesList(listOf(originPoint,destinationPoint))
            .profile(DirectionsCriteria.PROFILE_WALKING)
            .alternatives(false)
            .bearingsList(
                listOf(
                    Bearing.builder()
                        .angle(originLocation.bearing.toDouble())
                        .degrees(45.0)
                        .build(),
                    null
                )
            )
            .build(), routerCallback
    )