Проблема реализации Uploadify с Laravel 4

Редакция:

Я хочу использовать uploadify в laravel 4. Я застрял, так как я получаю только ошибку 500 Http, и я не выяснил, почему.

Итак, вот мой код:

Форма:

{{Form::open(array('action' => 'ProfileController@postUploadPicture2','files'=> true,'id'=>'uploadform2'))}}

{{ Form::file('file_upload',$attributes = array('id'=>'file_upload')) }}

{{ Form::token() }}

{{ Form::close() }}

Скрипт загрузки:

<script>
$(document).ready(function() {
var url = $("#uploadform2").attr('action');
setTimeout(function() {//referencias: http://stackoverflow.com/a/25135325/1883256
$('#file_upload').uploadify({
'fileTypeDesc' : 'Image Files',
'fileTypeExts' : '*.gif; *.jpg; *.png',
'debug'        :'true',
'swf'      : '../swf/uploadify.swf',
'uploader' : url, //debe redireccionar al controlador
'onFallback' : function() {
alert('Flash player no detected.');
},
'method'   : 'post',
'width'    : 150,//ancho del botón de browser
'buttonText' : 'Choose your file...',
'onUploadError' : function(file, errorCode, errorMsg, errorString) {
alert(':-( The file ' + file.name + ' could not be sent. There was the following error: ' + errorString + ' Mensaje: '+ errorMsg + ' código: '+errorCode + ' File: '+ file);
}
// Put your options here
});
},0);
});
</script>

Маршруты:

/*
*Upload user's picture AJAX (GET)
*/
Route::get('/edit/upload_picture2',array(
'as'    => 'user-upload-photo2',
'uses'  => 'ProfileController@getUploadPicture2'
));

/*
/Upload user's picture AJAX Uploadify (POST)
*/
Route::post('/edit/upload_picture2',array(
'as'    => 'user-upload-photo-post2',
'uses'  => 'ProfileController@postUploadPicture2'
));

И контроллер (в режиме тестирования), где я ожидаю показать мне сообщение:

public function postUploadPicture2(){
return 'posted and reached!';
}

Я получаю HTTP-ошибку 500 и код -200.

Отладочная информация показывает следующее:
Открытие загрузки:

---SWFUpload Instance Info---
Version: 2.2.0 2009-03-25
Movie Name: SWFUpload_0
Settings:
upload_url:               http://localhost/cimmgm/public/edit/upload_picture2
flash_url:                ../swf/uploadify.swf?preventswfcaching=1420936888141
use_query_string:         false
requeue_on_error:         false
http_success:
assume_success_timeout:   30
file_post_name:           Filedata
post_params:              [object Object]
file_types:               *.gif; *.jpg; *.png
file_types_description:   Image Files
file_size_limit:          0
file_upload_limit:        0
file_queue_limit:         999
debug:                    true
prevent_swf_caching:      true
button_placeholder_id:    file_upload
button_placeholder:       Not Set
button_image_url:         /cimmgm/public/edit/
button_width:             150
button_height:            30
button_text:
button_text_style:        color: #000000; font-size: 16pt;
button_text_top_padding:  0
button_text_left_padding: 0
button_action:            -110
button_disabled:          false
custom_settings:          [object Object]
Event Handlers:
swfupload_loaded_handler assigned:  false
file_dialog_start_handler assigned: true
file_queued_handler assigned:       true
file_queue_error_handler assigned:  true
upload_start_handler assigned:      true
upload_progress_handler assigned:   true
upload_error_handler assigned:      true
upload_success_handler assigned:    true
upload_complete_handler assigned:   true
debug_handler assigned:             true

SWF DEBUG: SWFUpload Init Complete
SWF DEBUG:
SWF DEBUG: ----- SWF DEBUG OUTPUT ----
SWF DEBUG: Build Number:           SWFUPLOAD 2.2.0
SWF DEBUG: movieName:              SWFUpload_0
SWF DEBUG: Upload URL:             http://localhost/cimmgm/public/edit/upload_picture2
SWF DEBUG: File Types String:      *.gif; *.jpg; *.png
SWF DEBUG: Parsed File Types:      gif,jpg,png
SWF DEBUG: HTTP Success:           0
SWF DEBUG: File Types Description: Image Files (*.gif; *.jpg; *.png)
SWF DEBUG: File Size Limit:        0 bytes
SWF DEBUG: File Upload Limit:      0
SWF DEBUG: File Queue Limit:       999
SWF DEBUG: Post Params:
SWF DEBUG: ----- END SWF DEBUG OUTPUT ----
SWF DEBUG:

Попытка загрузить файл:

SWF DEBUG: Event: fileDialogStart : Browsing files. Multi Select. Allowed file types: *.gif; *.jpg; *.png
SWF DEBUG: Select Handler: Received the files selected from the dialog. Processing the file list...
SWF DEBUG: Event: fileQueued : File ID: SWFUpload_0_0
SWF DEBUG: Event: fileDialogComplete : Finished processing selected files. Files selected: 1. Files Queued: 1
SWF DEBUG: StartUpload: First file in queue
SWF DEBUG: Event: uploadStart : File ID: SWFUpload_0_0
SWF DEBUG: ReturnUploadStart(): File accepted by startUpload event and readied for upload.  Starting upload to http://localhost/cimmgm/public/edit/upload_picture2 for File ID: SWFUpload_0_0
SWF DEBUG: Event: uploadProgress (OPEN): File ID: SWFUpload_0_0
SWF DEBUG: Event: uploadProgress: File ID: SWFUpload_0_0. Bytes: 39446. Total: 39446
SWF DEBUG: Event: uploadError: HTTP ERROR : File ID: SWFUpload_0_0. HTTP Status: 500.
SWF DEBUG: Event: uploadComplete : Upload cycle complete.

Как я могу это исправить? Что мне не хватает?