Fatal error: Uncaught Error: Class "GuzzleHttp\Promise\RejectedPromise" not found in /var/www/html/vendor/aws/aws-sdk-php/src/AbstractConfigurationProvider.php:155 Stack trace: #0 /var/www/html/vendor/aws/aws-sdk-php/src/S3/RegionalEndpoint/ConfigurationProvider.php(107): Aws\AbstractConfigurationProvider::reject() #1 /var/www/html/vendor/aws/aws-sdk-php/src/AbstractConfigurationProvider.php(73): Aws\S3\RegionalEndpoint\ConfigurationProvider::Aws\S3\RegionalEndpoint\{closure}() #2 /var/www/html/vendor/aws/aws-sdk-php/src/AbstractConfigurationProvider.php(134): Aws\AbstractConfigurationProvider::Aws\{closure}() #3 /var/www/html/vendor/aws/aws-sdk-php/src/S3/S3Client.php(991): Aws\AbstractConfigurationProvider::Aws\{closure}() #4 /var/www/html/vendor/aws/aws-sdk-php/src/S3/S3Client.php(441): Aws\S3\S3Client->addBuiltIns() #5 /var/www/html/vendor/aws/aws-sdk-php/src/AwsClient.php(810): Aws\S3\S3Client->__construct() #6 /var/www/html/docs/index.php(145): Aws\AwsClient::factory() #7 {main} thrown in /var/www/html/vendor/aws/aws-sdk-php/src/AbstractConfigurationProvider.php on line 155