I did! But sadly it didn't help. Later I found that the issue was related to SDK for Javascript and the wrong endpoint. But found a workaround there - added some more details here in section Challenge#2 : MethodNotAllowed

https://olena-k.medium.com/how-to-use-amazon-s3-object-lambda-to-generate-thumbnails-e16ae36a33ea In case someone else will run into same issue.