php - Error when installed Yii2 -

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i've install yii2 framework using composer error in browser (on localhost):

invalid configuration – yii\base\invalidconfigexception

yii\web\request::cookievalidationkey must configured secret key.

how can solve problem?

there problem basic app https://github.com/yiisoft/yii2-app-basic/issues/69 composer install doesn't generate key.

you need add key manually.

  1. go /config/web.php.
  2. edit line 'cookievalidationkey' => '', include random string (you can use 'cookievalidationkey' => 'jfsbkjsbfdskjgfdskjbgfsdhjgfajds',

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