Controller.php

API controller

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use Illuminate\Support\Facades\Auth;

class APIController extends Controller
{
    public function login(Request $request){
        if(Auth::attempt(['email' => request('username'), 'password' => request('password'), 'user_type_id' => 2])){ 
            $user = Auth::user(); 
            $success['token'] =  $user->createToken('MyApp')-> accessToken; 
            return response()->json(['success' => $success], 200); 
        } 
        else{ 
            return response()->json(['error'=>'Unauthorised'], 401); 
        } 
    }
}