Send Post core request from ionic blank app

Hello, I'm seeking for help to send just a post request to [login to view URL], but I'm getting an error "Blocage d’une requête multiorigines (Cross-Origin Request) : la politique « Same Origin » ne permet pas de consulter la ressource distante située sur [login to view URL] Raison : échec de la requête CORS" I tried to set a proxy to link localhost to [login to view URL], but still getting another error 404: "localhost/api" not found: this is my [login to view URL]: { "name": "ionic-app-base", "integrations": {}, "type": "angular", "v2": true, "typescript": true, "proxies": [ { "path": "/api", "proxyUrl": "[login to view URL]" } ] } this is my [login to view URL]: import { Component } from '@angular/core'; import { HttpClient} from '@angular/common/http' @Component({ selector: 'app-home', templateUrl: '[login to view URL]', styleUrls: ['[login to view URL]'], }) export class HomePage { constructor(public http: HttpClient) { [login to view URL]('/api') .subscribe((data) => { [login to view URL]("result") [login to view URL](data); }); } readAPI(URL: string){ return [login to view URL](URL, {}); } }