เชื่อมต่อ angular กับ Dropbox API JavaScript ปัญหาครับ

 angular.module('app', [])
        .controller('MainCtrl', ['$scope', '$location', '$http', function($scope, $location, $http) {

            if (!!parseQueryString($location.path()).access_token) {
                var dbx = new Dropbox({
                    accessToken: parseQueryString($location.path()).access_token
                });

                function filesListFolder(Path) {

                    dbx.filesListFolder({
                        path: Path
                    }).then(function(response) {
                        $scope.result =   response.entries;
                        console.log(response.entries);
///////////////////////*********************
                        $http.post('sql/project.sql.php', {
                            'action': 'GetProject'
                        })
///////////////////////*****************
                    })
                }
                filesListFolder('');
            } else {
                dbx = new Dropbox({
                    clientId: '<clientId>'
                });
                $scope.getAuthenticationUrl = dbx.getAuthenticationUrl('http://localhost:81/dropbox.html');

            }

            function showfile(data) {

                $scope.getAuthenticationUrl = data;
            }
        }]);

    function parseQueryString(str) {
        var ret = Object.create(null);

        if (typeof str !== 'string') {
            return ret;
        }
        str = str.replace("/", '');
        str = str.trim().replace(/^(\?|#|&)/, '');
        if (!str) {
            return ret;
        }

        str.split('&').forEach(function(param) {
            var parts = param.replace(/\+/g, ' ').split('=');
            // Firefox (pre 40) decodes `%3D` to `=`
            // https://github.com/sindresorhus/query-string/pull/37
            var key = parts.shift();
            var val = parts.length > 0 ? parts.join('=') : undefined;

            key = decodeURIComponent(key);

            // missing `=` should be `null`:
            // http://w3.org/TR/2012/WD-url-20120524/#collect-url-parameters
            val = val === undefined ? null : decodeURIComponent(val);

            if (ret[key] === undefined) {
                ret[key] = val;
            } else if (Array.isArray(ret[key])) {
                ret[key].push(val);
            } else {
                ret[key] = [ret[key], val];
            }
        });
        return ret;
    }