<?php

namespace AppHttpControllers;

use AppHttpControllersController;
use IlluminateHttpRequest;

class HomeController extends Controller {

    public function index(Request $request)
    {
        $analytics = $this->initializeAnalytics();
        $response = $this->getReport($analytics);
        echo '<pre>', print_r($response) ,'</pre>';exit;
        return view('index');
    }

    private function initializeAnalytics()
    {
        $client = new Google_Client();
        $client->setHttpClient(new GuzzleHttpClient([
            'verify' => false
        ]));
        $client->setApplicationName("Rezzta Analytics Reporting");
        $client->setAuthConfig(realpath(base_path(env('GA_JSON'))));
        $client->setScopes(['https://www.googleapis.com/auth/analytics.readonly']);
        $analytics = new Google_Service_AnalyticsReporting($client);

        return $analytics;
    }

    private function getReport($analytics)
    {
        $VIEW_ID = "xxxx";

        $dateRange = new Google_Service_AnalyticsReporting_DateRange();
        $dateRange->setStartDate("7daysAgo");
        $dateRange->setEndDate("today");

        $sessions = new Google_Service_AnalyticsReporting_Metric();
        $sessions->setExpression("ga:sessions");
        $sessions->setAlias("sessions");

        $request = new Google_Service_AnalyticsReporting_ReportRequest();
        $request->setViewId($VIEW_ID);
        $request->setDateRanges($dateRange);
        $request->setMetrics(array($sessions));

        $body = new Google_Service_AnalyticsReporting_GetReportsRequest();
        $body->setReportRequests( array( $request) );
        return $analytics->reports->batchGet( $body );
    }
}

Google_Service_Exception in REST.php line 118:
{
"error": {
"code": 403,
"message": "User does not have any Google Analytics account.",
"errors": [
{
"message": "User does not have any Google Analytics account.",
"domain": "global",
"reason": "forbidden"
}
],
"status": "PERMISSION_DENIED"
}
}