Fatal error: Uncaught Error: Class "Psr\Log\AbstractLogger" not found in /home/airtimer/public_html/vendor/amzn/amazon-pay-sdk-php/Psr/Log/NullLogger.php:13 Stack trace: #0 {main} thrown in /home/airtimer/public_html/vendor/amzn/amazon-pay-sdk-php/Psr/Log/NullLogger.php on line 13