cannot use classe because the name is already in use

<?php namespace consulta\Http\Controllers;

use consulta\Http\Requests;
use consulta\Http\Controllers\Controller;
//use consulta\Http\Controllers\Controller;
use consulta\Myusers1;
use Illuminate\Contracts\Auth\Guard;
use Illuminate\Contracts\Auth\Registrar;
use Illuminate\Foundation\Auth\AuthenticatesAndRegistersUsers;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Hash;
use DB;
use consulta\Myusers1;

class LoginController extends Controller {

    //Formulário de login
public function form(){
        return view ('form_login');
        }
//verifica a existência no banco
 public function login(Request $req){
        $mat = $req->input('matricula');
        $senha = Hash::make($req->input('senha'));
        var_dump($senha);
        $check =  DB::table('users')->where(['matricula'=>$mat])->get();
        if (Hash::check($check[0]->senha, $senha)); // true
       if ($check )
        {
            return 'ok';
         }
            return 'nao ok';
        }
}