Proxie on Ionic

I'm having trouble doing http requests on Ionic, I saw that one way to circumvent CORS is by using proxies.

I tried something like:

ionic.config.json:

{
  "name": "appIonic",
  "integrations": {
    "cordova": {}
  },
  "proxies": [
    {
      "path": "/loginnovo",
      "proxyUrl": "https://loginsiteapixx/loginnovo"
    }],
  "type": "ionic-angular"
}

At my service:

basepath = "";

  constructor(public _http: HttpClient, private _platform: Platform) {

    if(this._platform.is("cordova")){
      this.basepath = "https://loginsiteapixx"
    }

  }


  public login(credenciais){
    return this._http.post(this.basepath + '/loginnovo',
    {email: credenciais.email, password: credenciais.password}, 
    {observe: 'response'}) 
    .pipe(
      map((response) => ({data: response.body, status: response.status}))
    )}

When Ionic starts it returns me that the proxie was added, but when I make the request, the cors bars me. What am I doing wrong?