Defined route throwing controller method not found laravel 4

I have a route defined in routes.php file but when i make an ajax request from my angular app, i get this error

{"error":{"type":"Symfony\Component\HttpKernel\Exception\NotFoundHttpException","message":"Controller method not found.","file":"C:\xampp\htdocs\tedxph\vendor\laravel\framework\src\Illuminate\Routing\Controllers\Controller.php","line":290}}

this is my routes file

/*
|--------------------------------------------------------------------------
| Api Routes
|--------------------------------------------------------------------------
*/

Route::group(array('prefix' => 'api'), function() {
    //Auth Routes
    Route::post('auth/login', 'ApiUserController@authUser');
    Route::post('auth/signup', 'ApiUserController@registerUser');
    /* Persons */
    Route::group(array('prefix' => 'people'), function() {

        Route::get('{id}', 'ApiPeopleController@read');
        Route::get('/', 'ApiPeopleController@read');
    });
    /* Events */
    Route::group(array('prefix' => 'events'), function() {

        Route::get('{id}', 'ApiEventsController@read');
        Route::get('/','ApiEventsController@read');
    });
});

Accessing the same url (http://localhost/site/public/api/auth/signup) from a rest client app on chrome does not give any errors, what could be wrong?

this is the angular code from my controller

$rootScope.show('Please wait..registering');
                API.register({email: email, password: password})
                .success(function (data) {
                    if(data.status == "success") {
                        console.log(data);
                        $rootScope.hide();
                    }
                })
                .error(function (error) {
                    console.log(error)
                    $rootScope.hide();
                })

more angular code

angular.module('tedxph.API', [])
    .factory('API', function ($rootScope,  $http, $ionicLoading, $window) {
    //base url
    var base = "http://localhost/tedxph/public/api";

    return {
        auth: function (form) {
            return $http.post(base+"/auth/login", form);
        },

        register: function (form) {
            return $http.post(base+"/auth/signup", form);
        },

        fetchPeople: function () {
            return $http.get(base+"/people");
        },

        fetchEvents: function() {
            return $http.get(base+"/events");
        },
    }
});

Answer

Fixed the problem, turns my controller was calling an undefined method in the controller class. Renamed the method correctly and the request now works, thanks guys for the input.