Get the source code from Github    -    or the bookmarklet

Result:

https://mybookbee.com/
Array
(
    [date] => Tue, 09 Aug 2022 08:22:00 GMT
    [content-type] => text/html; charset=UTF-8
    [transfer-encoding] => chunked
    [connection] => close
    [x-frame-options] => SAMEORIGIN
    [permissions-policy] => accelerometer=(),autoplay=(),camera=(),clipboard-read=(),clipboard-write=(),fullscreen=(),geolocation=(),gyroscope=(),hid=(),interest-cohort=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=()
    [cache-control] => private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
    [expires] => Thu, 01 Jan 1970 00:00:01 GMT
    [expect-ct] => max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
    [report-to] => {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=opB3aWvlZ0gLwayrZrt1Q4WCA5LGQU28yqYGe%2B6VBD8E33vdbbmJRlFCqRB70fFAeKhpX1La%2BLaJb%2FcCbNFP4KKvHu48NRYLdTPN9FR3XtgwdOnxB%2FN9KsKgymUtA1V%2B"}],"group":"cf-nel","max_age":604800}
    [nel] => {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
    [vary] => Accept-Encoding
    [strict-transport-security] => max-age=31536000; includeSubDomains; preload
    [x-content-type-options] => nosniff
    [server] => cloudflare
    [cf-ray] => 737f14dd69cec25b-VIE
    [alt-svc] => h3=":443"; ma=86400, h3-29=":443"; ma=86400
)

Array
(
    [url] => https://mybookbee.com/
    [content_type] => text/html; charset=UTF-8
    [http_code] => 503
    [header_size] => 1280
    [request_size] => 115
    [filetime] => -1
    [ssl_verify_result] => 0
    [redirect_count] => 0
    [total_time] => 0.090681
    [namelookup_time] => 0.028475
    [connect_time] => 0.038679
    [pretransfer_time] => 0.071712
    [size_upload] => 0
    [size_download] => 7963
    [speed_download] => 88477
    [speed_upload] => 0
    [download_content_length] => -1
    [upload_content_length] => -1
    [starttransfer_time] => 0.090273
    [redirect_time] => 0
    [redirect_url] => 
    [primary_ip] => 188.114.97.3
    [certinfo] => Array
        (
        )

    [primary_port] => 443
    [local_ip] => 78.47.42.177
    [local_port] => 42138
    [http_version] => 2
    [protocol] => 2
    [ssl_verifyresult] => 0
    [scheme] => HTTPS
)

<!DOCTYPE html>
<html lang="en-US">
<head>
    <title>Just a moment...</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=Edge" />
    <meta name="robots" content="noindex,nofollow" />
    <meta name="viewport" content="width=device-width,initial-scale=1" />
    <link href="/cdn-cgi/styles/cf-errors.css" rel="stylesheet" />
    <meta http-equiv="refresh" content="35">
<script>
    (function(){
        window._cf_chl_opt={
            cvId: '2',
            cType: 'non-interactive',
            cNounce: '87086',
            cRay: '737f14dd69cec25b',
            cHash: 'd3104313cc9eab8',
            cUPMDTk: "\/?__cf_chl_tk=QTmldWoX1u9HUD8LanRMd2OvMsKttgpx7tPR7dOhq.E-1660033320-0-gaNycGzNBxE",
            cFPWv: 'g',
            cTTimeMs: '1000',
            cTplV: 2,
            cRq: {
                ru: 'aHR0cHM6Ly9teWJvb2tiZWUuY29tLw==',
                ra: 'RW1iZWQgUEhQIGxpYnJhcnk=',
                rm: 'R0VU',
                d: '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',
                t: 'MTY2MDAzMzMyMC41NDcwMDA=',
                m: 'QTs1269KPulwe6rOmX35lP3bajDa2luTefWrzI5xH9U=',
                i1: 'wAY0mZO3qG0GrSZVjDtPGQ==',
                i2: 'jHKXuqdYO7PWlH8iAAoOZw==',
                zh: 'aj7ll9Z1Qr3YyO29Yw8HCXNWGl2lBfNm2LxSNLP0IX0=',
                uh: 'VUCPljqorY5V2sVej9AEQnZkPIgyJeWmwiiJ1eY19Rw=',
                hh: 'KLfZDdcOD/iYJfhXL8iH+COLRfH/d1LT5jH+Se3C/VI=',
            }
        }
        window._cf_chl_enter = function(){window._cf_chl_opt.p=1};
    })();
</script>

</head>
<body class="no-js">

    <div class="main-wrapper" role="main">
    <div class="main-content">
        <h1 class="zone-name-title h1">
            <img class="heading-favicon" src="/favicon.ico"
                 onerror="this.onerror=null;this.parentNode.removeChild(this)" />
            mybookbee.com
        </h1>
        <h2 class="h2" id="cf-challenge-running">
            Checking if the site connection is secure
        </h2>
        <noscript>
            <div id="cf-challenge-error-title">
                <div class="h2">
                  <span class="icon-wrapper">
                      <div class="heading-icon warning-icon"></div>
                  </span>
                    <span id="cf-challenge-error-text">
                    Enable JavaScript and cookies to continue
                </span>
                </div>
            </div>
        </noscript>
        <div id='trk_jschal_js' style="display:none;background-image:url('/cdn-cgi/images/trace/jschal/nojs/transparent.gif?ray=737f14dd69cec25b')"></div>
        <div id="cf-challenge-body-text" class="core-msg spacer">
            mybookbee.com needs to review the security of your connection before
            proceeding.
        </div>
        <form id="challenge-form" action="/?__cf_chl_f_tk=QTmldWoX1u9HUD8LanRMd2OvMsKttgpx7tPR7dOhq.E-1660033320-0-gaNycGzNBxE" method="POST" enctype="application/x-www-form-urlencoded">
            <input type="hidden" name="md" value="iY2s5Q6Bs_.9bQwO7B.1JaZgTajt1b26ydmoXqmsjKM-1660033320-0-AT9bIJuf8Mbp1l7EMw98RF2JrjByXfImd7l2HTSiSlJOttN_1YnzRHTIB3tgfjfcJwtsusaLiD1Ufp7QMFJwk52MBS2GV4OWl7n4QjzrlWmJU1tq9lQ-yZTO9mdwcYMWY269suJl-ZTbPbrHBIiaoXjIjRJbY9d6DlFDbnoPL_6__5Y6IMuUIxgLlNL7kf5dmbo0rWMvOKXCNroDHfh8mRNZofZR2lYY6i5jh0UxosR0ZMUTKMGinq5mRAjtFu1fvHB_ETxU8FUnFFbLAp08-01IlNe1ZJWEkJ8C0GI-p1ltNGSf-nI2CnfPFP6VCyLLig8eYEo1204CgSDWb_d69RAI2T2Ogkgo5ZaDCA_sA6JRV6x9jQiDX0fPSGR4N4hSA2Eg6uTTHBAiTjhZTYaDLB5-ls5PaCScT_lCdrhFsjiWQhYzzdhCsRruTv6dbF7-zIEmJgj0MzzZcfP8tHKWheK7Au7Ooh4U9qr5MMh3Iib8lLGO97dQkgefEGS21YXanAvQUjSsV-wlQPFNTZYAmc9WInQdnZyt4vJkBaDhaqTs" />
            <input type="hidden" name="r" value="x4p_7uB_ve40XK3LPsnvbimrHagnmykV.tTi1vL9jp0-1660033320-0-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"/>
            
                <input type="hidden" name="pass" value="1660033321.547-FVtGHtT8zo"/>
            
        </form>
    </div>
</div>
<script>
    (function(){
        var trkjs = document.createElement('img');
        trkjs.setAttribute('src', '/cdn-cgi/images/trace/jschal/js/transparent.gif?ray=737f14dd69cec25b');
        trkjs.setAttribute('style', 'display: none');
        document.body.appendChild(trkjs);
        var cpo = document.createElement('script');
        cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/jsch/v1?ray=737f14dd69cec25b';
        window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;
        window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, -window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;
        if (window.history && window.history.replaceState) {
            var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;
            history.replaceState(null, null, "\/?__cf_chl_rt_tk=QTmldWoX1u9HUD8LanRMd2OvMsKttgpx7tPR7dOhq.E-1660033320-0-gaNycGzNBxE" + window._cf_chl_opt.cOgUHash);
            cpo.onload = function() {
                history.replaceState(null, null, ogU);
            };
        }
        document.getElementsByTagName('head')[0].appendChild(cpo);
    }());
</script>

    <div class="footer" role="contentinfo">
        <div class="footer-inner">
            <div class="clearfix diagnostic-wrapper">
                <div class="ray-id">Ray ID: <code>737f14dd69cec25b</code></div>
            </div>
            <div class="text-center">
                Performance &amp; security by
                <a rel="noopener noreferrer" href="https://www.cloudflare.com" target="_blank">Cloudflare</a>
            </div>
        </div>
    </div>
</body>
</html>

Fatal error: Uncaught Embed\Exceptions\InvalidUrlException: Invalid url 'https://mybookbee.com/' (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