check 1
 
AmazonPHP\SellingPartner\Configuration Object
(
    [lwaClientID:AmazonPHP\SellingPartner\Configuration:private] => amzn1.application-oa2-client.591a897440174fd0bedd7d0916bbd3a6
    [lwaClientSecret:AmazonPHP\SellingPartner\Configuration:private] => amzn1.oa2-cs.v1.322e2b459d92c25f0b7cfac29d4fe9ae68b8ec7f268a9f8aad91551ff5581539
    [accessKey:AmazonPHP\SellingPartner\Configuration:private] => ASIA3GIR6737LN3PSL3N
    [secretKey:AmazonPHP\SellingPartner\Configuration:private] => WcthvrpvCU0bjtew6jvGFYZRuYFZgA21TGUW5MMD
    [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] => FwoGZXIvYXdzEBoaDKS7vJDVHy4PX5BU7iK5AdiXF/RHw2gy2xhgqcDi71TGJsLyHblcJFDAgv7Hsx/CfnPtn6PsmklCHR1iyg+V2+jp2OQUsQg8Mni9cfAN5t6CSqy9TU8IOZBM/FowhYiUcp9Z6eRmdMwRjqJByn7gkVuxyofkqyGetfnqH6jsXuU8zy0eRXkIVi8E+JQr2fHK5ftvkA5e5GDw9kyuMJr7Uqy8psUR6Tox0R1eVeGiv6k3WpuQlRuvs2uLlMbHw/QW31aDxNU84P1zKMr64tQGMi3lNrbSsWG7iGW1kbOWzrLugm26r1MRUYyMQYA/XqoY4ydeAHV+MRKOCRn3JSc=
    [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