InvalidS3ObjectException when calling the IndexFac

I am attempting the following tutorial

https://aws.amazon.com/blogs/machine-learning/easily-perform-facial-analysis-on-live-feeds-by-creating-a-serverless-video-analytics-environment-with-amazon-rekognition-video-and-amazon-kinesis-video-streams/

So I replaced some part with my own bucket and key(file) name:

aws rekognition index-faces --image "{\"S3Object\":{\"Bucket\":\"testbucket\",\"Name\":\"testfile.png\"}}" --collection-id=rekVideoBlog --detection-attributes=ALL --external-image-id=Andy --region us-west-2

(assume testbucket is my bucket name and testfile is the file I uploaded and made public). Is this correct?

I have made sure to set the bucket and object public etc but I keep getting an error:

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

I also tried to access my bucket using:

aws s3 ls s3://testbucket

and I am able to display the content fine

are you currently facing this error : "An error occurred (InvalidS3ObjectException) when calling the IndexFaces operation: Unable to get object metadata from S3. Check object key, region and/or access permissions"?

I was able to run the sample Amazon Rekognition CLI command "index-faces" from the Amazon Rekogniton tutorial without any error as illustrated in the screenshot below :

Here's some tips for consideration in-case anyone else runs into this issue :

Make sure both S3 & Rekognition are using the same region i.e S3 bucket should be created in the same region as where Rekognition collection was created.
Since Amazon Rekognition supports both .jpg and .png formats, make sure the file name & format referenced in the CLI “index-faces” command matches the actual file in your S3 bucket.

Hope this helps.