check 1
 
AmazonPHP\SellingPartner\Configuration Object
(
    [lwaClientID:AmazonPHP\SellingPartner\Configuration:private] => amzn1.application-oa2-client.591a897440174fd0bedd7d0916bbd3a6
    [lwaClientSecret:AmazonPHP\SellingPartner\Configuration:private] => amzn1.oa2-cs.v1.b76d01800e16fbf5df128b331b94784c657c01d93bf695c8dd76ebeb368fa8b0
    [accessKey:AmazonPHP\SellingPartner\Configuration:private] => ASIA3GIR6737K2VVZA6O
    [secretKey:AmazonPHP\SellingPartner\Configuration:private] => D47PblmtKlvgZbT7Vh6yfV/t6OptEE779waeatgx
    [userAgent:AmazonPHP\SellingPartner\Configuration:private] => Library amazon-php/sp-api-php (language=PHP 8.1.34; Platform=Linux 4.18.0-553.64.1.el8_10.x86_64 x86_64)
    [securityToken:AmazonPHP\SellingPartner\Configuration:private] => FwoGZXIvYXdzEFkaDG5/gAKace6V5k011yK5AS1reHh9ipLvbcKU7wOLCwwtKsgiFEfPN28GPnqhpJ5xCvjYh3qfQIT8bQlphKq/kl05SVr6RWZ3vLnGooCJ/g7OHt8o6fogAE1H1KmMSfn3L3n20fpgJuHFAQGTuygNsoXj0LiH3iblSz9iGHg3kQOhFO7A15Dd1mEcAZtsA1tas5kVto6uX1jEmQyq1fOHUYMrHLDOiHA36PsXwH35JosV1dXE6bIGHvftz1f6PVcUUuJY8i2PZ7r6KJnw7M0GMi1OCgIH6xFQVfV9PLzX61hFraQG99Gc0vTvgE+HFpp2tA1EgQIjGclGOn825F8=
    [tmpFolderPath:AmazonPHP\SellingPartner\Configuration:private] => /tmp
    [loggerConfiguration:AmazonPHP\SellingPartner\Configuration:private] => AmazonPHP\SellingPartner\Configuration\LoggerConfiguration Object
        (
            [defaultLogLevel:AmazonPHP\SellingPartner\Configuration\LoggerConfiguration:private] => debug
            [customLogLevels:AmazonPHP\SellingPartner\Configuration\LoggerConfiguration:private] => Array
                (
                )

            [skippedAPIs:AmazonPHP\SellingPartner\Configuration\LoggerConfiguration:private] => Array
                (
                )

            [skippedAPIOperations:AmazonPHP\SellingPartner\Configuration\LoggerConfiguration:private] => Array
                (
                )

            [skipHttpHeaders:AmazonPHP\SellingPartner\Configuration\LoggerConfiguration:private] => Array
                (
                    [0] => authorization
                    [1] => x-amz-access-token
                    [2] => x-amz-security-token
                    [3] => proxy-authorization
                    [4] => www-authenticate
                    [5] => proxy-authenticate
                )

        )

    [extensions:AmazonPHP\SellingPartner\Configuration:private] => AmazonPHP\SellingPartner\Extensions Object
        (
            [extensions:AmazonPHP\SellingPartner\Extensions:private] => Array
                (
                )

        )

    [sandbox:AmazonPHP\SellingPartner\Configuration:private] => 
)
check 2 
Error: Class "CurlClient" not found