Install Amazon Web Services Plugin. (https://wordpress.org/plugins/amazon-web-services/) Add all the required keys, at the AWS menu that now should be available in your WP dashboard. Include the library in your code, in my case was: require ‘/path/to/plugins/amazon-web-services/vendor/aws/aws-autoloader.php’; Enjoy!
The reason for the media uploader not opening when clicking the second button is that both of your buttons have the same ID, which you are also binding to the function that open your uploader. Element IDs should always be unique, hence the .click function listener will only detect when user clicks the first button … Read more
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