To answer my own question, this is indeed the problem:
PHP message: Aws\S3\Exception\InvalidRequestException: AWS Error Code: InvalidRequest, Status Code: 400, AWS Request ID: 41663B7376FA5EB5, AWS Error Type: client, AWS Error Message: The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256., User-Agent: aws-sdk-php2/2.7.12
As you can see, I actually updated the SDK too to the latest version.
Any chance you might be able to look into this?
Thanks!
You’ve update the amazon-web-services plugin to the latest SDK and it still isn’t working? I’m not sure what it could be then, since that’s what we’re using to create the signature.
Yeah, I actually managed to fix it but the problem lies in Amazon Web Services plugin so I’m gonna post it in it’s support forum.
edit: here https://wordpress.org/support/topic/supporting-s3-signature-version-4?replies=1
Thanks!