NotFoundHttpException after following link in email

I'm trying to learn Laravel 5.3, so I'm doing my own password reset. In a "reset email" link, I'm sending myself the following link:

http://localhost:8000/users/newpassword/1/8ur7e1pvag6kx8nl0w

In my routes file I have:

Route::get('/users/newpassword/{$id}/{$remember}', 'UserController@newPassword')->name('usernewpassword');

However when I click the link, I'm getting: NotFoundHttpException in RouteCollection.php line 161:

I'm running this via artisan serve, so the port part of the link is correct.

Any ideas why this could be? Thanks!

via Chebli Mohamed