setting unknown property

Hello everyone,

I was try to create a new ActiveDataProvider in one of my actions and then i got this error:

"Unknown Property – yii\base\UnknownPropertyException",

"Setting unknown property: yii\data\ActiveDataProvider::0"

The case now i had two table:

1.table project.

2.table task that had a foreign key for project.

My relations are setup between the two tables. and everytime i want to create an action that has an ActiveDataProvider in ProjectController to fetch some information from task table i got this erorr.

I would like to hear your solutions about this issue, thank you and have a great day.

Can you share your code, so yii members can easily help you!

this is the code for my action project controller that i got the error with it:

    public function actionViewtasks($id)


        $rawData = Task::find()->where(['project_id'=>$this->findModel($id)->id])->all();


        $taskDataProvider = new ActiveDataProvider($rawData,[



                    'task_id','task_name', 'task_start', 'task_end', 'task_period','project_id','user_id'








        return $this->render('viewtasks',[

        'model' => $this->findModel($id),




Try this -

It fixed the problem, thank you so much and a have a great day :)

Your welcome::)