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<center><h1>502 Bad Gateway</h1></center>
<p>We received an invalid response from the upstream server.</p>
<p><i><a onclick="javascript:showDialog()" href="#">Click here to report this problem to the Department of Engineering</a></i></p>
<h2>User</h2>
<p>If you're just visiting the site, here are the steps you can take.</p>
<ol type=1>
<li>Try again in 5 minutes.</li>
<li>Contact the site owner for assistance.</li>
</ol>
<h2>Site Operator</h2>
<p>If you're the operator of this site, here are the steps you can take.</p>
<ol type=1>
<li>This code generally means our gateway received <b>CONNECTION REFUSED</b> while trying to communicate with your application, which means it's not listening on the port.</li>
<li>We could be listening on another port than the one you're using, make sure you're using the port given to you by Engineering.</li>
<li>If none of these solved your issue, please contact the Department of Engineering at <strong>engineering@libraryofcode.org</strong></li>
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<hr><center><a href="https://www.libraryofcode.org/">Library of Code sp-us</a></center>
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