Fatal error: Uncaught Error: Class "Whoops\Handler\Handler" not found in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\facade\ignition\src\ErrorPage\IgnitionWhoopsHandler.php:9 Stack trace: #0 {main} thrown in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\facade\ignition\src\ErrorPage\IgnitionWhoopsHandler.php on line 9