Mailchimp "Error Encountered: Text Instead of a New Tab Created"

I have implemented a basic mailchimp form that has the following structure

<!DOCTYPE html>
<html>
<head>
    <title></title>
</head>
<body>

<!-- Begin MailChimp Signup Form -->
<div id="mc_embed_signup">
<form action="http://facebook.us16.list-manage.com/subscribe/post?u=81d63ae912846f990f5307c84&amp;id=b817e70a9e" method="post" id="mc-embedded-subscribe-form" name="mc-embedded-subscribe-form" class="validate" target="_blank" novalidate>
    <div id="mc_embed_signup_scroll">
    <h2>Subscribe to our mailing list</h2>
<div class="indicates-required"><span class="asterisk">*</span> indicates required</div>
<div class="mc-field-group">
    <label for="mce-FNAME">First Name  <span class="asterisk">*</span>
</label>
    <input type="text" value="" name="FNAME" class="required" id="mce-FNAME">
</div>
<div class="mc-field-group">
    <label for="mce-LNAME">Last Name  <span class="asterisk">*</span>
</label>
    <input type="text" value="" name="LNAME" class="required" id="mce-LNAME">
</div>
<div class="mc-field-group">
    <label for="mce-EMAIL">Email Address  <span class="asterisk">*</span>
</label>
    <input type="email" value="" name="EMAIL" class="required email" id="mce-EMAIL">
</div>
<div class="mc-field-group">
    <label for="mce-JOB">Job Title  <span class="asterisk">*</span>
</label>
    <input type="text" value="" name="JOB" class="required" id="mce-JOB">
</div>
<div class="mc-field-group">
    <label for="mce-INDUSTRY">Industry  <span class="asterisk">*</span>
</label>
    <input type="text" value="" name="INDUSTRY" class="required" id="mce-INDUSTRY">
</div>
    <div id="mce-responses" class="clear">
        <div class="response" id="mce-error-response" style="display:none"></div>
        <div class="response" id="mce-success-response" style="display:none"></div>
    </div>    <!-- real people should not fill this in and expect good things - do not remove this or risk form bot signups-->
    <div style="position: absolute; left: -5000px;" aria-hidden="true"><input type="text" name="b_81d63ae912846f990f5307c84_b817e70a9e" tabindex="-1" value=""></div>
    <div class="clear"><input type="submit" value="Subscribe" name="subscribe" id="mc-embedded-subscribe" class="button"></div>
    </div>
</form>
</div>
<script type='text/javascript' src='//s3.amazonaws.com/downloads.mailchimp.com/js/mc-validate.js'></script><script type='text/javascript'>(function($) {window.fnames = new Array(); window.ftypes = new Array();fnames[1]='FNAME';ftypes[1]='text';fnames[2]='LNAME';ftypes[2]='text';fnames[0]='EMAIL';ftypes[0]='email';fnames[3]='JOB';ftypes[3]='text';fnames[4]='INDUSTRY';ftypes[4]='text';}(jQuery));var $mcj = jQuery.noConflict(true);</script>
<!--End mc_embed_signup-->

</body>
</html>

My local testing of this mailchimp form functions as expected, with the generated tab appearing like this: https://i.sstatic.net/V6pSt.png

However, when I deploy the exact same code on a server, instead of the tab, it renders as text in this format: https://i.sstatic.net/fq319.png

Has anyone encountered such behavior before? Upon inspecting the page, the persistent error is indicated as:

Failed to load resource: net::ERR_FILE_NOT_FOUND

Specifically related to "mce-error-response"

I would appreciate any insights. Thank you!

jqueryhtmlcssajaxmailchimp

Answer №1

When you run the code locally, the tab that opens is actually displaying the fallback behavior. The form should ideally show validation errors directly on the page as it does when tested on a server. However, due to the Failed to load resource error, this functionality is hindered in a local environment. This issue stems from a specific line within the script:

<script type='text/javascript' src='//s3.amazonaws.com/downloads.mailchimp.com/js/mc-validate.js'></script><script type='text/javascript'>(function($) {window.fnames = new Array(); window.ftypes = new Array();fnames[1]='FNAME';ftypes[1]='text';fnames[2]='LNAME';ftypes[2]='text';fnames[0]='EMAIL';ftypes[0]='email';fnames[3]='JOB';ftypes[3]='text';fnames[4]='INDUSTRY';ftypes[4]='text';}(jQuery));var $mcj = jQuery.noConflict(true);</script>

The presence of no protocol in the src attribute results in using the protocol of the current page. In a local setting, with the 'file:///' protocol, it attempts to access 

file:///s3.amazonaws.com/downloads.mailchimp.com/js/mc-validate.js
, which does not exist.

Contained within the validation script is code designed to allow form submission via AJAX, demonstrated by the comment from the script itself:

/**
 *  Grab the list subscribe url from the form action and make it work for an ajax post.
 */

Therefore, given that the script cannot be found locally, the default behavior kicks in, submitting the form to the specified URL in the action attribute and opening a new tab as indicated by the target attribute.

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