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] => ASIA3GIR6737DSNPUDT4
    [secretKey:AmazonPHP\SellingPartner\Configuration:private] => xVSW50L0g3330Oq/XXKjebXLXoumD5xxOcJRpQtT
    [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] => FwoGZXIvYXdzEFkaDMrzpmBf/NYmCPjLtSK5AQstEtWOtDBSF/Vb8liP0WNZE+/pGHE8DFvZzY7dsn5TBx1CxSbT5ubsJ4rorfGaWOLLWEFDFmiPEbs9Z0zDvoiXCeOr4vAZafmKesRWhpXEDgA8lnzEo/nwXGZbN3TcKwn6JMdqayKYUb2gN5PkpoJAV7271lstT7K/NzRL7qnsK5+BuBQ0ARcA7S9mNz1ZvCIbrW6fCJLWhMsiYjhLxk6HgxbQHSEy+I9hnE2kqwReB3tdsQac2wMvKP/x7M0GMi1rwuwRl80X3ts1W2j2l+5l65gyhsfmEkM/IE4W1feHzWkHgTJP0lQlgB5G+54=
    [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