Fatal error: Uncaught Error: Class "Psy\ExecutionClosure" not found in C:\mywamp\sites\allsite\calcomposer\vendor\psy\psysh\src\ExecutionLoopClosure.php:25 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\calcomposer\vendor\psy\psysh\src\ExecutionLoopClosure.php on line 25