Storing images in S3 failed

[n8m]

Hi.
I've setup S3 bucket and set up the AWS_S3_URL variable according docs. Then activate plugin s3 plugin in wordpress. Now, when i'm trying to upload image via 'add new media' I receive 36 copies of this file (some of them are with different resolution, but anyway some of them are duplicated) in S3 bucket. I can't access anything from wordpress (empty media files list).
Uploading taking much time, during which i see duplicating ajax requests, duplicating uploading of the file in the browser. Uploading finishes sometimes with error, sometimes with success, but anyway i don't see image in the wordpress media list. But images are in the S3.
Any idea? Should I add any information ?

[angyts]

usually, these are S3 issues.

Amazon is quite an animal, can be quite daunting for beginners.

Perhaps you can share with us what is your s3 bucket policy? Also some of your wp_config variables? As well as your composer.json config?