Fatal error: Uncaught Error: Class "Whoops\Handler\Handler" not found in C:\Apache24_x64\htdocs\ex-vak\vendor\filp\whoops\src\Whoops\Handler\PrettyPageHandler.php:18 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\ex-vak\vendor\filp\whoops\src\Whoops\Handler\PrettyPageHandler.php on line 18