array to string conversion laravel

به کد ههای من توجه کنید

web.php

Route::get('/code', 'HomeController@code')->name('code');
Route::post('/send', 'HomeController@send')->name('send');

HomeController.php

<?php

namespace App\Http\Controllers;

use App\Blog;
use App\Faq;
use App\SendSMS;
use App\Service;
use App\Slideshow;
use App\User;
use Illuminate\Http\Request;

class HomeController extends Controller
{
    /**
     * Show the application dashboard.
     *
     * @return void
     */
    public function index()
    {
        $slideshows = Slideshow::latest()->get();
        $services = Service::latest()->get();
        $faqs = Faq::latest()->get();
        $blogs = Blog::latest()->get();
        return view('Home.index', compact('slideshows', 'services', 'faqs', 'blogs'));
    }

    public function machines()
    {
        return view('Home.machines');
    }

    public function networks()
    {
        return view('Home.networks');
    }

    public function computers()
    {
        return view('Home.computers');
    }

    public function internets()
    {
        return view('Home.internets');
    }

    public function code()
    {
        return view('Home.send');
    }

    public function send(Request $request, $mobile = '09389267856')
    {
        if($request->ajax()) {
            $request->validate([
                'mobile_number' => 'required',
            ]);
            $sendSms = new SendSMS;
            $sendSms->mobile_number = $request->mobile_number;
            $sendSms->code = rand(10000,99999);
            if ($sendSms->save()) {
                try {
                    $api = new \Kavenegar\KavenegarApi("Example Api");
                    $sender = "10004346";
                    $message = " $sendSms->code ";
                    $receptor = $mobile;
                    $result = $api->Send($sender, $receptor, $message);
                    if ($result) {
                        foreach ($result as $r) {
                            echo "messageid = $r->messageid";
                            echo "message = $r->message";
                            echo "status = $r->status";
                            echo "statustext = $r->statustext";
                            echo "sender = $r->sender";
                            echo "receptor = $r->receptor";
                            echo "date = $r->date";
                            echo "cost = $r->cost";
                        }
                    }
                } catch (\Kavenegar\Exceptions\ApiException $e) {
                    echo $e->errorMessage();
                } catch (\Kavenegar\Exceptions\HttpException $e) {
                    echo $e->errorMessage();
                }
            }
            return response()->json(['data' => $request->mobile_number, 'id' => $sendSms->id]);
        }
    }
}

send.blade.php

@extends('Home.master')

@section('content')

    <div id="networks" class="pt-5 pb-5 mt-5">
        <div class="container">
            <div class="row">
                <div class="col-md-4 m-auto">
                    <div class="card mt-3">
                        <div class="card-header">
                            <h4>ثبت نام</h4>
                        </div>
                        <div class="card-body">
                            <form id="FormSend">
                                <div class="form-group" id="form-group-1">
                                    <label for="mobile_number">شماره تلفن</label>
                                    <input type="text" class="form-control" name="mobile_number" id="mobile_number">
                                </div>
                                <div class="form-group" id="form-group-2">
                                    <label for="code">کد</label>
                                    <input type="text" class="form-control" name="code" id="code">
                                </div>
                                <div class="form-group">
                                    <button type="submit" class="btn btn-danger" id="btn-ok">تایید</button>
                                </div>
                            </form>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
@endsection

@section('script')
    <script>

        $(document).ready(function(){
            $.ajaxSetup({
                headers: {
                    'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
                }
            });

            $("#btn-ok").click(function () {
                $("#form-group-1").hide();
                $("#form-group-2").fadeIn();
            });

            $('form').submit(function (event) {
                event.preventDefault();
                mobile_number = $('#mobile_number').val();
                $.post("{{ route('send') }}", {mobile_number:mobile_number}, function (data) {
                    $('#mobile_number').val('');
                    console.log(data);
                });
            });
        });
    </script>
@endsection

وقتی که من بعد از ذخیره کردن شماره تلفن همراه، این خطا را می بینم.