Fatal error: Uncaught InvalidArgumentException: Found 1 error while validating the input provided for the HeadObject operation: [Key] expected string length to be >= 1, but found string length of 0 in /home/mhipshe/dl.caudresis-catesis.fr/vendor/aws/aws-sdk-php/src/Api/Validator.php:65 Stack trace: #0 /home/mhipshe/dl.caudresis-catesis.fr/vendor/aws/aws-sdk-php/src/Middleware.php(87): Aws\Api\Validator->validate('HeadObject', Object(Aws\Api\StructureShape), Array) #1 /home/mhipshe/dl.caudresis-catesis.fr/vendor/aws/aws-sdk-php/src/S3/S3Client.php(594): Aws\Middleware::Aws\{closure}(Object(Aws\Command), NULL) #2 /home/mhipshe/dl.caudresis-catesis.fr/vendor/aws/aws-sdk-php/src/S3/S3Client.php(617): Aws\S3\S3Client::Aws\S3\{closure}(Object(Aws\Command), NULL) #3 /home/mhipshe/dl.caudresis-catesis.fr/vendor/aws/aws-sdk-php/src/S3/S3Client.php(551): Aws\S3\S3Client::Aws\S3\{closure}(Object(Aws\Command), NULL) #4 /home/mhipshe/dl.caudresis-catesis.fr/vendor/aws/aws-sdk-php/src/S3/S3Client.php(570): Aws\S3\S3Client::Aws\S3\{clos in /home/mhipshe/dl.caudresis-catesis.fr/vendor/aws/aws-sdk-php/src/Api/Validator.php on line 65