Laravel 6 has moved the auth scaffolding into a separate Laravel/UI package that you need to install in your project using the following command from a new terminal:
composer create-project --prefer-dist laravel/laravel blog
After creating the laravel project
composer require laravel/ui
php artisan ui vue --auth
Please run "npm install && npm run dev"
Then you are good to go
Invalid token when you try to do a password reset