Fix error type.

Author: terabytesoftw

config/web.php

@@ -14,7 +14,7 @@
     'components' => [
         'request' => [
             // !!! insert a secret key in the following (if it is empty) - this is required by cookie validation
-            'cookieValidationKey' => 'your cokie validation key here',
+            'cookieValidationKey' => '',
         ],
         'cache' => [
             'class' => 'yii\caching\FileCache',