Method Illuminate\Auth\RequestGuard::attempt does not exist.

[FupingQiu]

[2019-06-28 06:33:28] local.ERROR: Method Illuminate\Auth\RequestGuard::attempt does not exist. {"exception":"[object] (BadMethodCallException(code: 0): Method Illuminate\Auth\RequestGuard::attempt does not exist. at E:\laragon40\www\OKRsWalking\vendor\laravel\framework\src\Illuminate\Support\Traits\Macroable.php:102)
[stacktrace]
#0 E:\laragon40\www\OKRsWalking\app\Http\Controllers\Auth\LoginController.php(46): Illuminate\Auth\RequestGuard->__call('attempt', Array)
#1 E:\laragon40\www\OKRsWalking\vendor\laravel\framework\src\Illuminate\Foundation\Auth\AuthenticatesUsers.php(45): App\Http\Controllers\Auth\LoginController->attemptLogin(Object(Illuminate\Http\Request))
#2 [internal function]: App\Http\Controllers\Auth\LoginController->login(Object(Illuminate\Http\Request))
#3 E:\laragon40\www\OKRsWalking\vendor\laravel\framework\src\Illuminate\Routing\Controller.php(54): call_user_func_array(Array, Array)
#4 E:\laragon40\www\OKRsWalking\vendor\laravel\framework\src\Illuminate\Routing\ControllerDispatcher.php(45):