Fatal error: Uncaught Error: Undefined constant "STDERR" in /var/www/binary/vendor/codeception/base/PruneTest.php:14 Stack trace: #0 /var/www/binary/vendor/codeception/base/PruneTest.php(27): stderr() #1 {main} thrown in /var/www/binary/vendor/codeception/base/PruneTest.php on line 14