}catch (ex){} showing in header [closed]

You have nested <script> tags in your snippet. Try the following snippet, it’s reformatted for readability:

    <script id="mcjs">
    try {
        ! function(c, h, i, m, p) {
            m = c.createElement(h), p = c.getElementsByTagName(h)[0], m.async = 1, m.src = i, p.parentNode.insertBefore(m, p)
        }(document, "script", "https://chimpstatic.com/mcjs-connected/js/users/2095bd42340716fa509260a90/406ca4747992260e47dbadffd.js");
    } catch (ex) {}
    </script>