Fatal error: Uncaught Error: Class 'Whoops\Handler\Handler' not found in C:\dolibarr\www\lev-up\vendor\filp\whoops\src\Whoops\Handler\PlainTextHandler.php:20 Stack trace: #0 {main} thrown in C:\dolibarr\www\lev-up\vendor\filp\whoops\src\Whoops\Handler\PlainTextHandler.php on line 20