Hello Jon,
Thanks for writing in! The issue has occurred because you have inserted a broken HTML code in one of the Text elements in your custom footer. You have added this:
<a class="ftr-txt-div-no-line" href="https://www.linkedin.com/company/logex-inc/"><i class="x-icon x-icon-linkedin-square" data-x-icon-b="" aria-hidden="true"></i></a> 
<a class="ftr-txt-div-no-line" href="https://facebook.com/LogEx-106973654551255/"><i class="x-icon x-icon-facebook-square" data-x-icon-b="" aria-hidden="true"></i></a>
<br>
<span> </span>
<br>
<span>Designed by <a class="ftr-txt-div" href="https://longitudedesign.com/"><strong>Longitude°</strong</a> </span>
The correct code should be:
<a class="ftr-txt-div-no-line" href="https://www.linkedin.com/company/logex-inc/">
<i class="x-icon x-icon-linkedin-square" data-x-icon-b="" aria-hidden="true"></i>
</a> 
<a class="ftr-txt-div-no-line" href="https://facebook.com/LogEx-106973654551255/">
<i class="x-icon x-icon-facebook-square" data-x-icon-b="" aria-hidden="true"></i>
</a>
<br>
<span> </span>
<br>
<span>Designed by
<a class="ftr-txt-div" href="https://longitudedesign.com/">
<strong>Longitude°</strong>
</a>
</span>
We highly recommend that you always indent your HTML code to prevent any issues like broken or unclosed HTML tags.
Best Regards.