Cannot read property 'mode' of undefined about node-callofduty HOT 17 CLOSED

var express = require('express');
var router = express.Router();
const API = require('call-of-duty-api')();

router.get('/:username/:game', function(req, res, next) {
	var username = req.params.username;
	var game = req.params.game;
	var apiGame = API.platforms.battle;
	console.log(apiGame);
	if (game == "battle") {
		apiGame = API.platforms.battle;
	}
	else if (game == "steam") {
		apiGame = API.platforms.steam;
	}
	else if (game == "psn") {
		apiGame = API.platforms.psn;
	}
	
	function receiveStats() {
		API.MWwz(username, apiGame).then(data => {
			console.log(data);  // see output
			return res.status(202).json({
				"error": "nil",
				"response": data
			});
		}).catch (err => {
			console.log(err);
			return res.status(202).json({
				"error": err,
				"response": "nil"
			});
		});
	}
	
	receiveStats();
});
module.exports = router;

	function receiveStats() {
		test = () => {
		    API.MWwz("Lierrmm425324", API.platforms.battle).then(data => {
		        console.log(data);  // see output
		        return JSON.stringify({
		            "error": "nil",
		            "response": data
		        });
		    }).catch (err => {
		        console.log(err);
		        return JSON.stringify({
		            "error": err,
		            "response": "nil"
		        });
		    });
		};

		console.log(test());
	}

    module.MWwz = function (gamertag, platform = config.platform) {
        return new Promise((resolve, reject) => {
            brDetails = [];
            brDetails.br = {};
            brDetails.br_dmz = {};
            brDetails.br_all = {};
            this.MWmp(gamertag, platform).then((data) => {
                if(typeof data.lifetime.mode.br) { data.lifetime.mode.br.properties.title = "br"; brDetails.br = data.lifetime.mode.br.properties; }
                if(typeof data.lifetime.mode.br_dmz) { data.lifetime.mode.br_dmz.properties.title = "br_dmz"; brDetails.br_dmz = data.lifetime.mode.br_dmz.properties; }
                if(typeof data.lifetime.mode.br_all) { data.lifetime.mode.br_all.properties.title = "br_all"; brDetails.br_all = data.lifetime.mode.br_all.properties; }
                resolve(brDetails);
            }).catch(e => reject(e));
        });
    };