Codeception Error | Class "Yii" not found

Yii 2.0 Testing
1

Hello i created a new project to learn codeception.

But when i run “codecept run” i get the Following error:

Open contact page (ContactFormCest::openContactPage)

[Symfony\Component\Debug\Exception\FatalThrowableError]
Class ‘Yii’ not found

My bootstrap file:

?php
define(‘YII_ENV’, ‘test’);
defined(‘YII_DEBUG’) or define(‘YII_DEBUG’, true);

require(DIR . “/…/vendor/autoload.php”);
require(DIR . “/…/vendor/yiisoft/yii2/Yii.php”);

my codeception.yml:

actor: Tester
bootstrap: _bootstrap.php
paths:
tests: tests
log: tests/_output
data: tests/_data
helpers: tests/_support
settings:
memory_limit: 1024M
colors: true
modules:
config:
Yii2:
configFile: ‘config/test.php’

best regards