Contao\CoreBundle\EventListener\CommandSchedulerListener::canRunController PHP Method

    private function canRunController()
    {
        /** @var Config $config */
        $config = $this->framework->getAdapter(Config::class);
        return $config->isComplete() && !$config->get('disableCron') && $this->connection->getSchemaManager()->tablesExist(['tl_cron']);
    }