Hello, I'm experience a weird issue where $styleid gets unset inside of core/sprite.php
This is producing the output shown in the attachment. Does anyone know why $styleid would be getting unset?

Thanks in advance.
PHP Code:
$styleid = (int) $_REQUEST['styleid'];
$ltr = ($_REQUEST['td'] !== 'rtl');
// ######################### REQUIRE BACK-END ############################
//always process this script as guest
require_once(dirname(__FILE__) . '/vb/vb.php');
vB::init();
echo 'Before setRequest: ' . $styleid . "\n";
vB::setRequest(new vB_Request_Web());
echo 'After setRequest: ' . $styleid . "\n";
This is producing the output shown in the attachment. Does anyone know why $styleid would be getting unset?
Thanks in advance.
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