Fatal error: Uncaught Error: Undefined constant 'STDIN' in /home/edmedu/www/edmeducation.co.kr/tw-dev/vendor/symfony/process/Tests/PipeStdinInStdoutStdErrStreamSelect.php:17 Stack trace: #0 {main} thrown in /home/edmedu/www/edmeducation.co.kr/tw-dev/vendor/symfony/process/Tests/PipeStdinInStdoutStdErrStreamSelect.php on line 17