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

I am facing this bug 

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

when I try to use Multi Auth in my Laravel app using Laravel Passport with APIs (Laravel 9)

my auth.php

'guards' => [ 'web' => [ 'driver' => 'session', 'provider' => 'users', ], 'regular_user_api' => [ 'driver' => 'passport', 'provider' => 'users', 'hash' => true, ],], 'providers' => [ 'users' => [ 'driver' => 'eloquent', 'model' => App\Models\User::class, ],

The login controller

 public function login(Request $req){ $validator = Validator::make($req->all(), [ 'email' => 'required|email', 'password' => 'required', ]); if ($validator->fails()) { return response()->json($validator->errors(), 400); } if(Auth::guard('regular_user_api')->attempt(['email' => request('email') , 'password' => request('password')])){ config(['auth.guards.api.provider' => 'user']); $token = Auth::guard('regular_user')->user()->createToken('auth_token')->accessToken; return response()->json([ "user" => Auth::guard('regular_user')->user(), "token" => $token ], 200); } else { return response()->json(['Error'], 400); } }

How can I fix this bug? anyone help!