You are not alone - Wordfence 7.2.4 update breaks wordpress as there is reference of lib/wordfenceClass.php in wordfence.php
while there is no wordfenceClass.php in lib folder.
I will let you know a temporary fix for this and that is to disable Wordfence until an update is pushed by the authors, as other users are also facing the same issue
[FIX] WordFence Update Breaks Wordpress
Open FTP or any File Manager you have (cpanel etc) and go to your Wordpress directory and navigate to wp-content/plugins/ inside the plugins folder you will see a folder "wordfence" rename that folder to anything "wordfence_" and your site will start working.
Reinstalling the Plugin as the support suggests mostly would not work in this case as the authors would need to bring an update to the plugin and fix the issue.
Hope this helps !!!