Answers for "target class laravel component not found"

laravel route target class not found

Routing namespaces have been updated on Laravel 8.X

On your router, you should define:
use AppHttpControllersTestController;

And then, declare:
Route::get('test',[TestController::class, 'test']);

causes of class not found in laravel

the possible cause of this error can be:
1 class doesn’t exist
2.the class name case is not the same for example - Jalalian.php and jalalian.php are not the same even when the class name case is the same check to confirm that use statement has the right letter case. 
3. wrong namespace