504 Gateway Timeout

  • When sending out a newsletter through WordPress with the WP SES plugin I received this error…

    <!DOCTYPE HTML PUBLIC “-//IETF//DTD HTML 2.0//EN”>
    <html><head>
    <title>504 Gateway Timeout</title>
    </head><body>
    <h1>Gateway Timeout</h1>
    <p>The gateway did not receive a timely response
    from the upstream server or application.</p>
    </body></html>

    The strange thing is that the newsletter seemed to go out just fine. The site is a Bitnami WordPress instance hosted on AWS. Any idea why this may be happening?

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