You need permission Error

[nickwoelk]

When I run my program I get this error.
Fatal error: Uncaught exception 'Google\Spreadsheet\Exception\UnauthorizedException' with message 'You need permission' in /Users/nickwoelk/Desktop/migration_form_to_sheets/vendor/asimlqt/php-google-spreadsheet-client/src/Google/Spreadsheet/DefaultServiceRequest.php:356

I've already granted permissions to the spreadsheet and am able to read and create a new row. But it won't write my values to the spreadsheet.

`<?php
require DIR . '/vendor/autoload.php';
use Google\Spreadsheet\ServiceRequestFactory;
use Google\Spreadsheet\DefaultServiceRequest;

// creates a new Google Access Token
putenv('GOOGLE_APPLICATION_CREDENTIALS=' . DIR . '/client_secret.json');
$client = new Google_Client;
$client->useApplicationDefaultCredentials();
$client->setApplicationName("Migration form to Sheets");
$client->setScopes(['https://www.googleapis.com/auth/drive','https://spreadsheets.google.com/feeds']);
if ($client->isAccessTokenExpired()) {
$client->refreshTokenWithAssertion();
}
$accessToken = $client->fetchAccessTokenWithAssertion()["access_token"];
$serviceRequest = new DefaultServiceRequest($accessToken);
ServiceRequestFactory::setInstance($serviceRequest);

// Get our spreadsheet
$spreadsheet = (new Google\Spreadsheet\SpreadsheetService)
->getSpreadsheetFeed()
->getByTitle('Churn');

// Get the first worksheet (tab)
$worksheets = $spreadsheet->getWorksheetFeed()->getEntries();
$worksheet = $worksheets[0];

$listFeed = $worksheet->getListFeed();

// Inserts newdata into new row
$listFeed->insert([
'migration_date' => '',
'store_url' => 'mystore.myshopify.com',
'ticket_link' => '',
'subscriber_count' => "200",
'variation_of_active_customers' => '',
'percentage' => '',
'coming_from' => '',
'why_are_they_migrating' => '',
//...
]);

?>`