Target class controller does not exist - Laravel 8

Question

Here is my controller:

Answer 1

in laravel-8 default remove namespace prefix so you can set old way in laravel-7 like:

in RouteServiceProvider.php add this variable

protected $namespace = 'App\Http\Controllers';

and update boot method

public function boot()
{
       $this->configureRateLimiting();

       $this->routes(function () {
            Route::middleware('web')
                ->namespace($this->namespace)
                ->group(base_path('routes/web.php'));

            Route::prefix('api')
                ->middleware('api')
                ->namespace($this->namespace)
                ->group(base_path('routes/api.php'));
        });
}

Answer 2

In laravel-8 you can use like this

 Route::group(['namespace'=>'App\Http\Controllers', 'prefix'=>'admin',
 'as'=>'admin.','middleware'=>['auth:sanctum', 'verified']], function()
{
    Route::resource('/dashboard', 'DashboardController')->only([
        'index'
    ]);
});

Thanks