When performing testing using boto3, checksum data was being added to the raw data in the S3 bucket. Boto3 version: 1.36.18. def add_file(cls, bucket: str = "test_bucket", body: str = "body", key: str = "key"): s3_client = boto3.client("s3") s3_client.put_object(Bucket=bucket, Key=key, Body=body) return key When the data is retrieved, checksum data is included. def get_object(cls, bucket_name: str = "test_bucket", file_name: str = "file.txt"): s3_client = boto3.client("s3") s3_object = s3_client.get_object(Bucket=bucket_name, Key=file_name) cls.body = s3_object["Body"].read().decode("utf-8") cls.metadata = s3_object["Metadata"] return cls This is causing my tests to fail. I have tried reducing the boto3 version to a lower 1.36 version but still have the same issues. Continue reading...