Fatal error: Uncaught Error: Undefined constant "STDIN" in /home/waecliberia/public_html/api.waecliberia.org/vendor/symfony/process/Tests/PipeStdinInStdoutStdErrStreamSelect.php:17 Stack trace: #0 {main} thrown in /home/waecliberia/public_html/api.waecliberia.org/vendor/symfony/process/Tests/PipeStdinInStdoutStdErrStreamSelect.php on line 17