Fatal error: Uncaught Error: Call to undefined function db_update() in /apps/www/osslite/projects/drupal/modules/simpletest/tests/upgrade/drupal-6.comments.database.php:2 Stack trace: #0 {main} thrown in /apps/www/osslite/projects/drupal/modules/simpletest/tests/upgrade/drupal-6.comments.database.php on line 2