Fatal error: Uncaught Error: Class "Psy\Shell" not found in C:\mywamp\sites\allsite\calcomposer\vendor\psy\psysh\test\FakeShell.php:16 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\calcomposer\vendor\psy\psysh\test\FakeShell.php on line 16