Http Post request is not getting successful in angular js(1.5) - angularjs

Question

I am working on HTTP post request in angular JS (1.5).
First I pass request data to factory method. Call the Http post request and send the response back to controller. But I always get the below error:
Failed to load resource: the server responded with a status of 404 (Not Found)
Below is my controller code:
app.controller("logicCtrl",['$scope','getDestinationService','getVehicleService','getTokenService','getResultService','$http',
function($scope, getDestinationService,getVehicleService,getTokenService,getResultService,$http){
$scope.getResult = function(){
var resultPromise = getResultService.getFinalResult($scope.request_data);
resultPromise.then(function(result){
$scope.result = result.data;
console.log("result:"+$scope.result);
});
}
});
And this is my factory method:
app.factory("getResultService",['$http','$q',function($http, $q){
var getResultApi = "https://findfalcone.herokuapp.com/find";
var headers = {'Accept' : 'application/json'};
var getFinalResult = function(request_data){
var deferred = $q.defer();
var request_data = JSON.stringify(request_data);
return $http({
url: getResultApi,
method: "POST",
data: request_data,
headers: {'Accept' : 'application/x-www-form-urlencoded'}
}).then(function (response) {
if (typeof response.data === 'object') {
deferred.resolve(response.data);
} else {
deferred.reject(response.data);
}
}).catch(function(response) {
return deferred.reject(response.data);
});
return deferred.promise;
};
return { getFinalResult: getFinalResult };
}]);
Edit: As some people are directly hitting the URL in browser and saying URL is not working. It won't work this way as it is post call, not get call. I tried testing this URL in Postman and it is working absolutely fine.
Here is the screenshot:

Answer 1

In the getFinalResult you are overwriting the Accept header as application/x-www-form-urlencoded where as it should be application/json. You are not using the headers variables declared earlier.
Disclaimer: I wrote the Finding Falcone backend application.