Google Analytics PHP API - Error (403) Access Not Configured - php

Question

I have been Googling this for going on hours now. I have followed the Hello Analytics tutorial.
The application runs fine until the user has granted permission from the Google 'consent screen' at which point i receive the following error:
There wan a general error : Error calling GET My url
(403) Access Not Configured. Please use Google Developers Console to
activate the API for your project.
I have checked in the developer console and Analytics API is enabled and, after reading other posts on this, have added Google+ and Drive access.
NOTE: I am running this application locally and redirecting the redirecting back to 127.0.0.1.
I have added my code below for reference although I think the issue is to do with my google console account and / or running this application locally.
Appreciate any help with this guys. Please let me know if any further information is required.
==================================================================================
// --------------------- Google libraries
require_once 'google-api-php-client/src/Google_Client.php';
require_once 'google-api-php-client/src/contrib/Google_AnalyticsService.php';
session_start();
// --------------------- Application credentials
$client = new Google_Client();
$client->setApplicationName('Interim Testing Tool');
$client->setClientId('xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.apps.googleusercontent.com');
$client->setClientSecret('xxxxxxxxxxxxxxxxxxxxxxxx');
$client->setRedirectUri('http://127.0.0.1');
$client->setDeveloperKey('xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx');
$client->setScopes(array('https://www.googleapis.com/auth/analytics.readonly'));
// Returns objects from the Analytics Service instead of associative arrays.
$client->setUseObjects(true);
// --------------------- Client access checks
// Handle authorization flow from the server
if (isset($_GET['code'])) {
$client->authenticate();
$_SESSION['token'] = $client->getAccessToken();
$redirect = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
header('Location: ' . filter_var($redirect, FILTER_SANITIZE_URL));
}
// Retrieve and use stored credentials if set
if (isset($_SESSION['token'])) {
$client->setAccessToken($_SESSION['token']);
}
if (!$client->getAccessToken()) {
// CLient not logged in create a connect button
$authUrl = $client->createAuthUrl();
print "<a class='login' href='$authUrl'>Connect Me!</a>";
} else {
$analytics = new Google_AnalyticsService($client);
runMainDemo($analytics);
}
//-------------------------------------------------------------- Run main demo
function runMainDemo($analytics) {
try {
// Get the user's first view (profile) ID.
$profileId = getFirstProfileId($analytics);
if (isset($profileId)) {
// Query the Core Reporting API.
$results = getResults($analytics, $profileId);
// Output the results.
printResults($results);
}
} catch (apiServiceException $e) {
// Error from the API.
print 'There was an API error : ' . $e->getCode() . ' : ' . $e->getMessage();
} catch (Exception $e) {
print 'There wan a general error : ' . $e->getMessage();
}
}
// ------------------------------------------------------------------ Get first profile id
function getFirstprofileId($analytics) {
$accounts = $analytics->management_accounts->listManagementAccounts();
if (count($accounts->getItems()) > 0) {
$items = $accounts->getItems();
$firstAccountId = $items[0]->getId();
$webproperties = $analytics->management_webproperties->listManagementWebproperties($firstAccountId);
if (count($webproperties->getItems()) > 0) {
$items = $webproperties->getItems();
$firstWebpropertyId = $items[0]->getId();
$profiles = $analytics->management_profiles->listManagementProfiles($firstAccountId, $firstWebpropertyId);
if (count($profiles->getItems()) > 0) {
$items = $profiles->getItems();
return $items[0]->getId();
} else {
throw new Exception('No views (profiles) found for this user.');
}
} else {
throw new Exception('No webproperties found for this user.');
}
} else {
throw new Exception('No accounts found for this user.');
}
}