Summary:
Search form with checkboxes causing 500 error on submit (PHP 8.1)
Detailed Description:
This may be a very specific use-case so please contact me to set up a demo. It
seems to be fine in PHP 7.4.
PHP Fatal error: Uncaught TypeError: rawurlencode(): Argument #1 ($string) must
be of type string, array given in
/path/lib/classes/internal/module_support/modform.inc.php