Error while send Email in Ionic 4

Hi,

I am trying to send Email using Backendless server but it give an error while sending Email.

login.page.html :

<ion-title>login</ion-title>

<ion-button (click)= Send()>Backendless

login.page.ts :

constructor(public httpreq: HttpClient ) { }

Send(){

var url = “https://api.backendless.com/<application_id>-<app_key>/messaging/email”;

var body = {

from : “example@gmail.com”,

subject : “Sample Email”,

bodyparts : {

textmessage : “Send Email”,

htmlmessage : “Send Email to me from the backendless server.”

},

to : [ “mymail@gmail.com” ]

}

this.httpreq.post(url, body,

{

 headers: { 'Content-Type' : 'application/json' },

}).subscribe(success => {

console.dir("SUCCESS -> " + JSON.stringify(success));

}, error => {

console.dir("ERROR -> " + JSON.stringify(error));

 });

}

Error in Chrome Browser Console :

POST https://api.backendless.com/<app_id>/<app_key>/messaging/email 400 (Bad Request)

ERROR -> {“headers”:{“normalizedNames”:{},“lazyUpdate”:null},“status”:400,“statusText”:“Bad Request”,“url”:“https://api.backendless.com/<app_id>/<app_key>/messaging/email”,“ok”:false,“name”:“HttpErrorResponse”,“message”:“Http failure response for https://api.backendless.com/<app_id>/<app_key>/messaging/email: 400 Bad Request”,“error”:{“code”:5045,“message”:“Cannot send email with the default Email Settings. Change the Email Settings in the console and try again”,“errorData”:{}}}

Please help, i need this urgent.

First thing I would do is obey this part of the error message.