Get the source code from Github    -    or the bookmarklet

Result:

https://gutes-angebot.net/
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            gutes-angebot.net
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            Checking if the site connection is secure
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    <div class="footer" role="contentinfo">
        <div class="footer-inner">
            <div class="clearfix diagnostic-wrapper">
                <div class="ray-id">Ray ID: <code>737f10629f72c30a</code></div>
            </div>
            <div class="text-center">
                Performance &amp; security by
                <a rel="noopener noreferrer" href="https://www.cloudflare.com" target="_blank">Cloudflare</a>
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        </div>
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</body>
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Fatal error: Uncaught Embed\Exceptions\InvalidUrlException: Invalid url 'https://gutes-angebot.net/' (Status code 503) in /var/www/oscarotero.com/www/embed3/src/Embed.php:142 Stack trace: #0 /var/www/oscarotero.com/www/embed3/src/Embed.php(81): Embed\Embed::process() #1 /var/www/oscarotero.com/www/embed3/demo/index.php(216): Embed\Embed::create() #2 {main} thrown in /var/www/oscarotero.com/www/embed3/src/Embed.php on line 142