• Hi,

    I want to put my static files in S3 and CloudFront. I made all settings from the AWS console.
    I put keys in the w3 total cache settings page.

    But when I tell the plugin to upload my files to S3 the error message is:

    Unable to put object (S3::putObject(): [InvalidRequest] The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.).

    My site is on EC2 instance in Frankfurt region.

    Thanks

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