If you did not make any changes to the MODX installation or configuration around that time is it possible that the version of
php running on your web server has been updated by your server administrator or hosting company?
I also noticed that your base href is set to:
<base href="https://ftlauderdalecc.com/" />
But your site is actually published on:
https://www.ftlauderdalecc.com/
I can't see how this could cause the problem you are experiencing, but I think it might cause problems of some sort. Perhaps others reading this post could advise on this observation?
Could you provide details of the version of MODX you are using, which Blog extra you are using (with it's version number) and what version of php you have running on your server?