Ionic 5 and Odoo connection got error on handling json response

I am trying to connect odoo and ionic 5 using api interface. below is my Odoo controller:

@http.route(’/ionicon/authenpost’,type=“json”,csrf=False,cors="*", auth=“public”,website=False, method=[‘POST’])
def authenPost(self, login,pwd,base_location=None):

    env = request.env(context=dict(request.env.context, show_address=False, no_tag_br=True))
    db =
    return request.env['ir.http'].session_info()

deployment is ok and already tested with Postman. the response is ok as well.

but when I tried to call with ionic 5 android app, I got the following error:

`{"status":400,"url":"","headers":{"date":"Mon, 18 Jan 2021 17:01:05 GMT","content-length":"308","server":"Werkzeug/0.16.1 Python/3.8.2","x-android-selected-protocol":"http/1.0","x-android-response-source":"NETWORK 400","x-android-received-millis":"1610989264019","x-android-sent-millis":"1610989263965","content-type":"text/html"},"error":"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2 Final//EN\">\n<title>400 Bad Request</title>\n<h1>Bad Request</h1>\n<p>&lt;function ionic_conController.authenPost at 0x7fc9687620d0&gt;, /ionicon/authenpost: Function declared as capable of handling request of type 'json' but called with a request of type 'http'</p>\n"}`

actually I already pass ‘application/json’ header. please see the below code:


this.http.sendRequest("", { 
  method: 'post',
  responseType: 'json',
  data:{ 'jsonrpc':'2.0', 'params' : { 'login':'', 'pwd':'testabc' }},
  headers: {
    accept: 'application/json',
    'Content-Type': 'application/json'
}).catch(err =>{

I am using

import { HTTP } from '@ionic-native/http/ngx';

Where can i put content-type ?

Best Rgds, jm