My session and data current user not there when i upload my web site in the server

0 down vote favorite please i have a problem, i use rest API with yii2 2.0.6 and AngulaJs 1.6

all actions which required a authentificat don’t work. have error 403 forbidden

Yii::$app->session[‘session_id’] and Yii::$app->user it was not there after i’m upload the web site in my server ?

please help me. excuse me for ,y english