printErrors example

$progress = new Progress($log->getId(), Progress::STATE_PROGRESS, 0);
        do {
            $progress = $importExport->import(Context::createDefaultContext(), $progress->getOffset());
            $progressBar->setProgress($progress->getOffset());
            $records += $progress->getProcessedRecords();
        } while (!$progress->isFinished());

        $elapsed = time() - $startTime;
        $io->newLine(2);

        if ($printErrors) {
            $this->printErrors($importExport, $log, $io, $doRollback && $progress->getState() === Progress::STATE_FAILED);
        }

        $this->printResults($log, $io);

        if ($dryRun) {
            $io->info(sprintf('Dry run completed in %d seconds', $elapsed));

            return self::SUCCESS;
        }

        if (!$doRollback || $progress->getState() === Progress::STATE_SUCCEEDED) {