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    <p>Your PHP backend is the problem.  The PHP side of things is
      triggering a warning that it's executing too slowly, and that
      requires you to alter your PHP settings (which is not an NGINX
      thing) to accept a longer execution time on your scripts.</p>
    <p><br>
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    <p>Thomas<br>
    </p>
    <div class="moz-cite-prefix">On 9/24/20 12:46 PM, Kaushal Shriyan
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAD7Ssm9wK9TOunKRw-ddL3hFW6hnQRJjkhaXpDtq0VzgmVM_MQ@mail.gmail.com">==>
      /var/log/php-fpm/error.log <==<br>
      ...<br>
      [23-Sep-2020 08:37:30] WARNING: [pool www] child 12015, script
      '/var/www/html/motest/devportal/web/index.php' (request: "POST
      /index.php?_wrapper_format=drupal_ajax") executing too slow
      (3.733207 sec), logging<br>
      ...<br>
      ==> /var/log/nginx/error.log <==<br>
      2020/09/23 08:38:26 [error] 12035#0: *1 upstream timed out (110:
      Connection timed out) while reading response header from upstream,
      client: 157.45.28.7, server: <a
        href="http://dev-portal.motest.net" moz-do-not-send="true">dev-portal.motest.net</a>,
      request: "POST /admin/config/development/performance HTTP/1.1",
      upstream: "fastcgi://unix:/run/php-fpm/www.sock", host: "<a
        href="http://dev-portal.motest.net" moz-do-not-send="true">dev-portal.motest.net</a>",
      referrer: "<a
href="https://dev-portal.motest.net/admin/config/development/performance"
        moz-do-not-send="true">https://dev-portal.motest.net/admin/config/development/performance</a>"</blockquote>
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