Fatal error: Uncaught AmazonPHP\SellingPartner\Exception\ApiException: [401] Error connecting to the API (https://api.amazon.com/auth/o2/token) in /home/php8crons/public_html/amazon-sp-api/vendor/amazon-php/sp-api-sdk/src/AmazonPHP/SellingPartner/OAuth.php:71 Stack trace: #0 /home/php8crons/public_html/amazon-sp-api/notification.php(36): AmazonPHP\SellingPartner\OAuth->exchangeRefreshToken('Atzr|IwEBIC6scF...') #1 {main} thrown in /home/php8crons/public_html/amazon-sp-api/vendor/amazon-php/sp-api-sdk/src/AmazonPHP/SellingPartner/OAuth.php on line 71