How to list objects in a bucket ? NoSuchKey error

I build a s3 space and can upload files in this one with success. I meet a problem when I try to browse files stored on my space. Here is the client I use :

session = boto3.session.Session()
client = session.client('s3', region_name='fra1', 
                              endpoint_url=settings.AWS_S3_ENDPOINT_URL,
                              aws_access_key_id=settings.AWS_ACCESS_KEY_ID, 
                              aws_secret_access_key=settings.AWS_SECRET_ACCESS_KEY
                        )

This part is ok because it’s exactly the same for uploading. Error happens at the following line :

resp = client.list_objects(Bucket=settings.AWS_STORAGE_BUCKET_NAME)

I got this response :

An error occurred (NoSuchKey) when calling the ListObjects operation: Unknown

And I can’t explain why it doesn’t recognize my key. I tried with a wrong key like Bucket=“helloworld” and got exactly the same error. Otherwise I’m sure my settings.AWS_STORAGE_BUCKET_NAME is the correct one because I can seet it when I go on my endpoint_url

<ListBucketResult xmlns=“http://s3.amazonaws.com/doc/2006-03-01/”> <Name>[MY_BUCKET_NAME]</Name> <Prefix/> <MaxKeys>1000</MaxKeys> <IsTruncated>false</IsTruncated>

Thank you for helping :)