Error when putting object in bucket : MD5 does not match etag when using Java AWS SDK

[StefH]

I'm using AWS S3 SDK to put a file into this fake s3.

Exception in thread "main" com.amazonaws.AmazonClientException: Unable to verify integrity of data upload. Client calculated content hash (contentMD5: rtGkDmuy7nJ1ms6ZoEyrKQ== in base 64) didn't match hash (etag: b348ec55910b6836d3f2bd8e69f484f0 in hex) calculated by Amazon S3. You may need to delete the data stored in Amazon S3. (metadata.contentMD5: null, md5DigestStream: com.amazonaws.services.s3.internal.MD5DigestCalculatingInputStream@78aea4b9, bucketName: hello-world, key: file_636120647747450000.txt) at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1609) at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:3147) at xxx.aws.s3.S3Context.putObjectAsString(S3Context.java:26)