Heroku - Yii2 Error - A Circular Dependency Is Detected

I’am try deploy Yii2 to heroku, but I get blank page, cause I use prod mode and debug is false. if I use debug is true, always error module yii2-debug not found.

Yii2 application to deploy is yii2-app-basic standard not customize, with php 5.6.

Look in logs :

2014-09-23T19:31:15.255056+00:00 app[web.1]: 2014/09/23 19:31:15 [error] 77#0: *

7 FastCGI sent in stderr: "PHP message: exception 'yii\base\InvalidConfigExcepti

on’ with message 'A circular dependency is detected for bundle 'app\assets\AppAs

set’.’ in /app/vendor/yiisoft/yii2/web/View.php:293

[SOLVED] yii2-app-basic in heroku




 "minimum-stability": "dev",

    "require": {

        "php": ">=5.4.0",

	"ext-mbstring": "*",

	"ext-gd": "*",

        "yiisoft/yii2-dev": "*",

        "yiisoft/yii2-bootstrap": "*",

        "yiisoft/yii2-swiftmailer": "*",

        "fxp/composer-asset-plugin": "*"

    },