I am attempting to save my JEvents configuration but I keep getting the message 403 - forbidden. I am running Joomla! 4.2.7; PHP 8.1.15; and Database Version 10.3.38-MariaDB.
Is it a web server or Joomla specific error page?
Could be a problem in your web hosting choking on one of the values in the form. Do you have apache mod_security running on your hosting? Can you check your server error/firewall logs