AWS Rekognition gives InvalidS3Exeption error

Question

AWS Rekognition gives InvalidS3Exeption error

Every time I run a command

aws rekognition detect-labels --image "S3Object={Bucket=BucketName,Name=picture.jpg}" --region us-east-1

I get this error.

InvalidS3ObjectException: An error occurred (InvalidS3ObjectException) when calling the DetectLabels operation: Unable to get image metadata from S3.  Check object key, region and/or access permissions.

I'm trying to get shortcuts for a project I'm working on, but I can't go through this step. I configured aws with my passkey, secret key, us-east-1 region and json as the output format.

I also tried the code below and I got exactly the same error (I correctly replaced BucketName with the name of my bucket.)

import boto3

BUCKET = "BucketName"
KEY = "picture.jpg"

def detect_labels(bucket, key, max_labels=10, min_confidence=90, region="eu-west-1"):
    rekognition = boto3.client("rekognition", region)
    response = rekognition.detect_labels(
        Image={
            "S3Object": {
                "Bucket": bucket,
                "Name": key,
            }
        },
        MaxLabels=max_labels,
        MinConfidence=min_confidence,
    )
    return response['Labels']


for label in detect_labels(BUCKET, KEY):
    print "{Name} - {Confidence}%".format(**label)