PHP Warning – yii\base\ErrorException

International Spanish
1

Hola buenas tardes alguien me podria ayudar con este error:

move_uploaded_file(uploads/Data.csv): failed to open stream: No such file or directory

quiero subir un archivo .CSV a mis tablas de yii2 avanced y me sale ese error agradeceria su gran ayuda.

este es mi codigo en el controlador:

public function actionUploadperiod(){

$model = new CsvForm;





if($model->load(Yii::$app->request->post())){


    $file = UploadedFile::getInstance($model,'file');


    $filename = 'Data.'.$file->extension;


    $upload = $file->saveAs('uploads/'.$filename);


    if($upload){


        define('CSV_PATH','uploads/');


        $csv_file = CSV_PATH . $filename;


        $filecsv = file($csv_file);


        print_r($filecsv);


        foreach($filecsv as $data){


            $modelnew = new Period;


          


            $hasil = explode(",",$data);


            $periodID = $hasil[0];


            $periodName = $hasil[1];


            $startDate = $hasil[2];


            $endDate = $hasil[3];


            


            $modelnew->periodID = $periodID;


            $modelnew->periodName = $periodName;


            $modelnew->startDate = $startDate;


            $modelnew->endDate = $endDate;


            





            $modelnew->save();


        }


        unlink('uploads/'.$filename);


        return $this->redirect(['site/index']);


    }


}else{


    return $this->render('upload',['model'=>$model]);