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] => ASIA3GIR6737KFPOUX6A
    [secretKey:AmazonPHP\SellingPartner\Configuration:private] => j0aQtzLhOYJ37sGmp3G2rR82r1J0jDvhxmrtfFZB
    [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] => FwoGZXIvYXdzEJ3//////////wEaDDhWYziD48ixkH+4JyK5ASJMooDI4hrLKUhuOA7W84RoiZ4aUq/ZAbZiQGz0rdnKbZyFUjEO8mpjyasHVJqngzdZp5voF8wEmllXr6s9ce3vl3jyL7/1pqpAt9WhsKC330DSYwUzSdSIPVSs9iz85zK8IZfhJlIdfhrSPIvWBRH1f1IEG76LS6Rf//YtLPADhurwfVeQKfKCGCCAXCJTA9DqOJdOdjRSdG9hEPShOK81Re62KiAjICLa4jicd7lZhUQ9ued5n2SfKKuXqssGMi3MQaC7O7jzQYnfQ34YdMuRBTfZpTZi2KlcSSB/Wp79vzevhDpwwcX/94/Xeh4=
    [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