The Symfony\Component\Console\Helper\ProgressHelper class has been deprecated in Symfony 2.5. Use the Symfony\Component\Console\Helper\ProgressBar class instead.
/**
* @param ProgressHelper $progress
* @param OutputInterface $output
* @param string $filename
*/
public function __construct(ProgressHelper $progress, OutputInterface $output, $filename)
{
$progress->setFormat(ProgressHelper::FORMAT_QUIET);
$output = new ExportOutput($output, $filename, false);
// reset old value
$output->write('0%');
in src/Console/Progress/Export.php, line 32
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