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] => ASIA3GIR6737D7K2ARXX
    [secretKey:AmazonPHP\SellingPartner\Configuration:private] => ELjkM1cwfTBYLpN2ynAE13HAVHCB8kIt57QQ3xol
    [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] => FwoGZXIvYXdzEFkaDHVLCx9hmfBbKSB4hCK5AVcOXkwTX8D6udmU4tRjWxTCsdVOk0SPS4xr1515sKPYHYGLZrhh8aY/a+8PVxjIWoxwmbk15XW3/rlui/RtxJTYGpMcrwOMluezkmOVmoeIrl0VYmBADrG9iamqgaBjND2Uq7ukQy4UvHYKFo9w4GcIaj5ZIQwsTmFHpJe6IoIUzf/3v/2oVot74GEu4qvLwcrhav5WUuuKYQHD+l4G4AdLhUY0KqCTBhEH5xapRud3+Ly2KEqgmEz/KNnw7M0GMi3nMSN7iHCb0q8oQpYESzNhlnCba6holOqTt6Z0xaq0++CeIupR9M7TQfzD8SI=
    [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