laravel is equal to authentication code example

Example 1: laravel auth

//laravel 8.x
//for bootstrap scafolding
php artisan ui bootstrap --auth

Example 2: Route::auth(); giving error in laravel 7

Do this step from the upgrade guide 
https://laravel.com/docs/7.x/upgrade#authentication-scaffolding

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composer require laravel/ui "^2.0"