is there a way to reset or rebuild a laravel project duplicate?

Your route has been cached. It reduces all of your route registrations into a single method call within a cached file, improving the performance of route registration when registering hundreds of routes. If you want to clear the cached file, then simply hit :

php artisan route:clear

You can cache your route again by :

php artisan route:cache

For more info see the official documentation of Route Caching, Optimizing Views, Environment