cordova - Ionic 2 social sharing throws cordova_not_available error -

i using ionic 2 framework, i'm trying work social-sharing plugin. in process throws cordova_not_available error.

below typescript code:

import { component } '@angular/core'; import { navcontroller, navparams } 'ionic-angular'; import { socialsharing } '@ionic-native/social-sharing';  @component({    selector: 'page-view-awareness',    templateurl: 'view-awareness.html' })  export class viewawarenesspage {      public email : any;      constructor(public navctrl: navcontroller, public navparams: navparams,              public socialsharing : socialsharing) {}       ionviewdidload() {         console.log('ionviewdidload viewawarenesspage');      }       shareviatwitter(){           this.email = 'sekhar.technodrive@gmail.com';           this.socialsharing.shareviaemail('body', 'subject',                 this.email).then(() => {                    alert("success");                }).catch((data) => {                    alert(data);           });      }   } 

please 1 me, in advance.