Error in reading .gz file in python using gzip

Question

I am using code to read file from AWS s3 bucket using boto3, throwing error "Not a gzipped file (b'\xef\xbb')" even if filename is ends with .gz and the content type is also application/x-gzip, it throwing erorr to uncompress the input file how can i handle this.

import gzip

job.file_bucket = 'upload-bucket'
job.file_path = 'filepath/filename.gz'
s3client = AwsS3Service.get_client(True)
file_object = s3client.Object(job.file_bucket, job.file_path)

job.file_object = file_object.get()['Body']
content_type = file_object.get()["ContentType"]
job.cFilePath = f"{job.file_bucket}/{job.file_path}"

if content_type == 'application/x-gzip' or (content_type == 'binary/octet-stream' and     job.cFilePath.endswith('.gz')):
    with gzip.open(job.file_object, 'rb') as file:
        xml_data = file.read()