PHP Notice ‘yii\base\ErrorException’ with message ‘unserialize(): Error at offset 0 of 15070 bytes’
in C:\wamp\www\pub\vendor\yiisoft\yii2-debug\controllers\DefaultController.php:132
Stack trace:
#0 C:\wamp\www\pub\vendor\yiisoft\yii2-debug\controllers\DefaultController.php(147): yii\debug\controllers\DefaultController->getManifest()
#1 C:\wamp\www\pub\vendor\yiisoft\yii2-debug\controllers\DefaultController.php(92): yii\debug\controllers\DefaultController->loadData()
#2 C:\wamp\www\pub\vendor\yiisoft\yii2\base\InlineAction.php(55): yii\debug\controllers\DefaultController->actionToolbar()
#3 C:\wamp\www\pub\vendor\yiisoft\yii2\base\InlineAction.php(55): ::call_user_func_array:{C:\wamp\www\pub\vendor\yiisoft\yii2\base\InlineAction.php:55}()
#4 C:\wamp\www\pub\vendor\yiisoft\yii2\base\Controller.php(151): yii\base\InlineAction->runWithParams()
#5 C:\wamp\www\pub\vendor\yiisoft\yii2\base\Module.php(455): yii\base\Controller->runAction()
#6 C:\wamp\www\pub\vendor\yiisoft\yii2\web\Application.php(84): yii\base\Module->runAction()
#7 C:\wamp\www\pub\vendor\yiisoft\yii2\base\Application.php(375): yii\web\Application->handleRequest()
#8 C:\wamp\www\pub\web\index.php(12): yii\base\Application->run()
#9 {main}
what does that mean?