issue with route file in laravel

I have a problem with laravel, i modify several times the route file and suddenly stop working i try to change everything back but the problem remains. is really weird.

in the browser appear : Failed to load resource: the server responded with a status of 500 (Internal Server Error)

in log file appear this: local.ERROR: exception 'Symfony\Component\Debug\Exception\FatalErrorException' with message 'Uncaught exception 'InvalidArgumentException' with message 'Route [home] not defined.' in C:\xampp\htdocs\ponyzero_express\vendor\laravel\framework\src\Illuminate\Routing\UrlGenerator.php:273

via Chebli Mohamed