setup/includes/upgrades/common/2.3.1-oninitculture.php
<?php
/**
* Set the service to 1 for OnInitCulture
*/
/** @var modEvent $onInitCulture */
$onInitCulture = $modx->getObject('modEvent', array('name' => 'OnInitCulture'));
if ($onInitCulture) {
$onInitCulture->set('service', 1);
$onInitCulture->save();
}