Fatal error: Uncaught Error: Interface "Symfony\Component\Console\Output\OutputInterface" not found in C:\mywamp\sites\allsite\calcomposer\vendor\psy\psysh\src\Output\OutputPager.php:20 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\calcomposer\vendor\psy\psysh\src\Output\OutputPager.php on line 20