Undefined property: stdClass::$text

[vipin733]

I'm trying to implement Cisco Spark with Botman Studio 2.0. its replying
but when I try to hear any document file it give me errors here is full

[2017-10-01 16:59:41] local.ERROR: Undefined property: stdClass::$text {"exception":"[object] (ErrorException(code: 0): Undefined property: stdClass::$text at E:\\laragon\\www\\precilybot\\vendor\\botman\\driver-cisco-spark\\src\\CiscoSparkDriver.php:78)
[stacktrace]
#0 E:\\laragon\\www\\precilybot\\vendor\\botman\\driver-cisco-spark\\src\\CiscoSparkDriver.php(78): Illuminate\\Foundation\\Bootstrap\\HandleExceptions->handleError(8, 'Undefined prope...', 'E:\\\\laragon\\\\www\\\\...', 78, Array)
#1 E:\\laragon\\www\\precilybot\\vendor\\botman\\botman\\src\\BotMan.php(174): BotMan\\Drivers\\CiscoSpark\\CiscoSparkDriver->getMessages()
#2 E:\\laragon\\www\\precilybot\\vendor\\botman\\botman\\src\\Traits\\HandlesConversations.php(168): BotMan\\BotMan\\BotMan->getMessages()
#3 E:\\laragon\\www\\precilybot\\vendor\\botman\\botman\\src\\BotMan.php(373): BotMan\\BotMan\\BotMan->loadActiveConversation()
#4 E:\\laragon\\www\\precilybot\\app\\Http\\Controllers\\BotManController.php(21): BotMan\\BotMan\\BotMan->listen()
#5 [internal function]: App\\Http\\Controllers\\BotManController->handle()
#6 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Controller.php(54): call_user_func_array(Array, Array)
#7 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\ControllerDispatcher.php(45): Illuminate\\Routing\\Controller->callAction('handle', Array)
#8 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Route.php(212): Illuminate\\Routing\\ControllerDispatcher->dispatch(Object(Illuminate\\Routing\\Route), Object(App\\Http\\Controllers\\BotManController), 'handle')
#9 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Route.php(169): Illuminate\\Routing\\Route->runController()
#10 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php(645): Illuminate\\Routing\\Route->run()
#11 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(30): Illuminate\\Routing\\Router->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#12 E:\\laragon\\www\\precilybot\\vendor\\laravel\\passport\\src\\Http\\Middleware\\CreateFreshApiToken.php(48): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#13 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(149): Laravel\\Passport\\Http\\Middleware\\CreateFreshApiToken->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#14 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#15 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Middleware\\SubstituteBindings.php(41): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#16 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(149): Illuminate\\Routing\\Middleware\\SubstituteBindings->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#17 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#18 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\VerifyCsrfToken.php(67): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#19 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(149): Illuminate\\Foundation\\Http\\Middleware\\VerifyCsrfToken->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#20 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#21 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\View\\Middleware\\ShareErrorsFromSession.php(49): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#22 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(149): Illuminate\\View\\Middleware\\ShareErrorsFromSession->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#23 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#24 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Session\\Middleware\\StartSession.php(63): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#25 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(149): Illuminate\\Session\\Middleware\\StartSession->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#26 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#27 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Cookie\\Middleware\\AddQueuedCookiesToResponse.php(37): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#28 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(149): Illuminate\\Cookie\\Middleware\\AddQueuedCookiesToResponse->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#29 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#30 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Cookie\\Middleware\\EncryptCookies.php(59): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#31 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(149): Illuminate\\Cookie\\Middleware\\EncryptCookies->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#32 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#33 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(102): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#34 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php(647): Illuminate\\Pipeline\\Pipeline->then(Object(Closure))
#35 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php(622): Illuminate\\Routing\\Router->runRouteWithinStack(Object(Illuminate\\Routing\\Route), Object(Illuminate\\Http\\Request))
#36 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php(588): Illuminate\\Routing\\Router->runRoute(Object(Illuminate\\Http\\Request), Object(Illuminate\\Routing\\Route))
#37 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php(577): Illuminate\\Routing\\Router->dispatchToRoute(Object(Illuminate\\Http\\Request))
#38 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Kernel.php(176): Illuminate\\Routing\\Router->dispatch(Object(Illuminate\\Http\\Request))
#39 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(30): Illuminate\\Foundation\\Http\\Kernel->Illuminate\\Foundation\\Http\\{closure}(Object(Illuminate\\Http\\Request))
#40 E:\\laragon\\www\\precilybot\\vendor\\barryvdh\\laravel-cors\\src\\HandleCors.php(37): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#41 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(149): Barryvdh\\Cors\\HandleCors->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#42 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#43 E:\\laragon\\www\\precilybot\\vendor\\fideloper\\proxy\\src\\TrustProxies.php(56): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#44 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(149): Fideloper\\Proxy\\TrustProxies->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#45 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#46 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest.php(30): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#47 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(149): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#48 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#49 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest.php(30): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#50 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(149): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#51 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#52 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\ValidatePostSize.php(27): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#53 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(149): Illuminate\\Foundation\\Http\\Middleware\\ValidatePostSize->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#54 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#55 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\CheckForMaintenanceMode.php(46): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#56 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(149): Illuminate\\Foundation\\Http\\Middleware\\CheckForMaintenanceMode->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#57 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#58 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php(102): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))
#59 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Kernel.php(151): Illuminate\\Pipeline\\Pipeline->then(Object(Closure))
#60 E:\\laragon\\www\\precilybot\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Kernel.php(116): Illuminate\\Foundation\\Http\\Kernel->sendRequestThroughRouter(Object(Illuminate\\Http\\Request))
#61 E:\\laragon\\www\\precilybot\\public\\index.php(55): Illuminate\\Foundation\\Http\\Kernel->handle(Object(Illuminate\\Http\\Request))
#62 {main}
"}  

here is my botman.php

<?php
use App\Http\Controllers\BotManController;
use Mpociot\BotMan\Messages\Message;
use BotMan\BotMan\Messages\Attachments\File;
use BotMan\BotMan\Messages\Attachments\Image;
use GuzzleHttp\Client;

$botman = resolve('botman');

$botman->hears('hi', function ($bot) {
    // $bot->typesAndWaits(2);
    $bot->reply('Hello!');
});

$botman->hears('ok', function ($bot) {
    // $bot->typesAndWaits(2);
    // $some = $bot->getMessage()->getFiles();
    $bot->reply('anything else!');

});


$botman->receivesFiles(function($bot, $files) {

    foreach ($files as $file) {

        $url = $file->getUrl(); // The direct url
        $payload = $file->getPayload(); // The original payload
    }

    $bot->reply('file');
});