Class App\Http\Controllers\v2\Usercontroller does not exist code example

Example 1: Target class [App\Http\Controllers\EmployeeController] does not exist.

[PagesController::class, 'index']

Example 2: Method App\Http\Controllers\UserController::loadVie does not exist

Method App\Http\Controllers\UserController::loadVie does not exist

Example 3: Method App\Http\Controllers\ApiController::getStudent does not exist.

Method App\Http\Controllers\ApiController::getStudent does not exist.