BUG: Latest Update Causes PHP 8.3 Fatal Error (8.2 Works)

My client using Enfold is on PHP 8.3, after updating Enfold the site died with a fatal error:

Got error ‘PHP message: PHP Fatal error: Uncaught ValueError: fread(): Argument #2 ($length) must be greater than 0 in /var/www/vhosts/domain.com/httpdocs/wp-content/themes/enfold/framework/php/function-set-avia-backend.php:1012

That line is:
$filecontent = fread( $handle, $fsize );

The error happens because in PHP 8.3, fread() now throws a ValueError if you pass a length of 0 or negative. In PHP 8.2 it would just return an empty string silently.

It should be changed to:
$filecontent = $fsize > 0 ? fread($handle, $fsize) : ”;

For now I just switched the client to PHP 8.2, and that was a quick fix. Please patch it so that others using PHP 8.3 don’t break their sites.