在将数据提交给Mailchimp之后，我试图自动关闭模式。但这就是发生上述问题的地方。我在这里尝试了几种现有的解决方案，但是它们似乎并没有解决问题。我有启动自举事件，但仍然没有用。我已使用外部引导程序和jquery链接将mailchimp api代码粘贴在模式下方（出于隐私考虑，我已隐藏了某些部分）。请帮忙。

//functions.php 
    function front_page_popup() { ?>
      <!-- Modal -->
      <div id="newsletter" class="modal fade bd-example-modal-lg rounded-0 mt-3 pr-0" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel" aria-hidden="true">
        <div class="modal-dialog modal-lg" role="document">
          <div class="modal-content">
            <div class="container pt-5 px-5 pb-0">
              <div class="d-flex justify-content-center mt-0">
                <i class="fas fa-lightbulb fa-3x"></i>
              </div>
              <div class="d-flex justify-content-center my-2">
                <h1 class="text-center"><strong>Subscribe for Weekly Goodies</strong></h1>
              </div>
              <div class="d-flex justify-content-center my-2">
                <p class="text-secondary text-center">Proven Strategies To Earn Online Straight To Your Inbox.</p>
              </div>
              <div class="d-flex justify-content-center my-4">
                <hr style="width: 75%; border-width: 2px;">
              </div>
              <div class="d-flex justify-content-center my-4">
                <img class="w-25 h-50 rounded-circle" src="https://d1aettbyeyfilo.cloudfront.net/yoursolutions/6999175_1576332391276Thomas_Edison.jpg" alt="thomas edison">
                <div class="d-flex flex-column bd-highlight my-auto ml-3">
                  <div class="p-2 bd-highlight">
                    <q><em class="text-secondary">Genius is one percent inspiration and ninety-nine percent perspiration.</em></q>
                  </div>
                  <div class="p-2 bd-highlight">
                    <p><strong>Thomas Edison</strong></p>
                  </div>
                </div>
              </div>
            </div>
            <div id="mc_embed_signup" class="container-fluid bg-light">
              <form action="{hid--for--privacy--reasons}" method="post" id="mc-embedded-subscribe-form" name="mc-embedded-subscribe-form" target="_blank" class="needs-validation" novalidate>
                <div class="form-row">
                  <div class="col">
                    <input type="text" name="FNAME" class="form-control form-control-lg mt-5 mb-2 mx-auto" style="width: 80%;" id="mce-FNAME" placeholder="First Name..." required>
                    <div class="invalid-feedback text-center">
                      Please provide your name.
                    </div>
                  </div>
                </div>
                <div class="form-row">
                  <div class="col mb-3">
                    <input type="email" name="EMAIL" class="form-control form-control-lg mt-3 mb-2 mx-auto" style="width: 80%;" id="mce-EMAIL" placeholder="Email Address..." required>
                    <div class="invalid-feedback text-center">
                      Please provide your email address.
                    </div>
                  </div>
                </div>
                <div id="mce-responses" class="clear">
                  <div class="text-center" id="mce-error-response" style="display:none; color: red;"></div>
                  <div class="text-center" id="mce-success-response" style="display:none; color: green;"></div>
                </div>
                <button id="mc-embedded-subscribe" class="btn btn-primary btn-lg btn-block mt-2 mb-5 mx-auto" style="width: 80%; background-color: #9661f3; border-color: #9661f3;" type="submit">
                  <strong>Subscribe Now</strong>
                </button>
              </form>
            <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[0]='EMAIL';
              ftypes[0]='email';
              fnames[1]='FNAME';
              ftypes[1]='text';
              $('#newsletter').modal('hide');
            }
            (jQuery));
              var $mcj = jQuery.noConflict(true);
              </script>
            <!--End mc_embed_signup-->
            </div>
          </div>
        </div>
      </div>

    <?php }
    add_filter('wp_footer','front_page_popup');

下面是外部链接

//External links in functions.php
wp_deregister_script('jquery');
wp_enqueue_script('jquery','https://code.jquery.com/jquery-3.4.1.slim.min.js',array(),null,true);
wp_enqueue_script('bootstrap-js',get_stylesheet_directory_uri() . '/js/bootstrap.min.js',array('jquery'),'4.4.1',true);