Calling api not working on ios real device Ionic 5

Hi , i’m using ionic 5 , i my methods are working fine on android and browser while i tried it on ios it didn’t worked , i tried to use capacitor and also http native plugin nothing working i got errors like : {“headers”:{“normalizedNames”:{},“lazyUpdate”:null,“headers”:{}},“status”:0,“statusText”:"Unknown Error"
[error] - ERROR {“line”:4349,“column”:73,“sourceURL”:“capacitor://localhost/main-es2015.js”}

my package.json

{
  "name": "boyot",
  "version": "0.0.1",
  "author": "Ionic Framework",
  "homepage": "https://ionicframework.com/",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e",
    "resources": "cordova-res ios && node scripts/resources.js",
    "resource": "capacitor-resources -p ios"
  },
  "private": true,
  "dependencies": {
    "@agm/core": "1.0.0",
    "@agm/drawing": "^1.1.0",
    "@agm/js-marker-clusterer": "^1.1.0",
    "@angular/animations": "^10.0.9",
    "@angular/cdk": "^9.2.4",
    "@angular/common": "~9.1.6",
    "@angular/core": "~9.1.6",
    "@angular/forms": "~9.1.6",
    "@angular/material": "^10.1.3",
    "@angular/platform-browser": "~9.1.6",
    "@angular/platform-browser-dynamic": "~9.1.6",
    "@angular/router": "~9.1.6",
    "@capacitor/core": "2.4.0",
    "@capacitor/ios": "^2.4.0",
    "@ionic-native/call-number": "^5.27.0",
    "@ionic-native/camera": "^5.27.0",
    "@ionic-native/core": "^5.0.7",
    "@ionic-native/geolocation": "^5.27.0",
    "@ionic-native/globalization": "^5.27.0",
    "@ionic-native/http": "^5.28.0",
    "@ionic-native/image-picker": "^5.27.0",
    "@ionic-native/launch-navigator": "^5.27.0",
    "@ionic-native/location-accuracy": "^5.27.0",
    "@ionic-native/network": "^5.27.0",
    "@ionic-native/photo-viewer": "^5.27.0",
    "@ionic-native/social-sharing": "^5.27.0",
    "@ionic-native/splash-screen": "^5.0.0",
    "@ionic-native/status-bar": "^5.0.0",
    "@ionic-native/youtube-video-player": "^5.27.0",
    "@ionic/angular": "^5.0.0",
    "@ionic/storage": "^2.3.0",
    "@ngx-translate/core": "11.0.1",
    "@ngx-translate/http-loader": "4.0.0",
    "@types/hammerjs": "^2.0.36",
    "agm-overlays": "^2.0.0",
    "capacitor-resources": "^2.0.3",
    "cordova-ios": "5.1.1",
    "cordova-plugin-advanced-http": "^3.0.0",
    "cordova-plugin-device": "^2.0.3",
    "cordova-plugin-file": "^6.0.2",
    "cordova-plugin-ionic-keyboard": "^2.2.0",
    "cordova-plugin-ionic-webview": "^5.0.0",
    "cordova-plugin-network-information": "^2.0.2",
    "cordova-plugin-splashscreen": "^5.0.4",
    "cordova-plugin-statusbar": "^2.4.3",
    "cordova-plugin-whitelist": "^1.3.4",
    "hammerjs": "^2.0.8",
    "ionic-pullup": "^4.0.0-beta.6",
    "js-marker-clusterer": "^1.0.0",
    "lodash": "^4.17.15",
    "moment": "^2.27.0",
    "ngx-bootstrap": "^5.6.1",
    "ngx-input-file": "^8.0.1",
    "ngx-progressive-image-loader": "^4.0.0",
    "ngx-tags-input": "^2.0.1",
    "pannellum": "^2.5.6",
    "rxjs": "~6.5.1",
    "tslib": "^1.10.0",
    "zone.js": "~0.10.2"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.901.5",
    "@angular/cli": "~9.1.5",
    "@angular/compiler": "~9.1.6",
    "@angular/compiler-cli": "~9.1.6",
    "@angular/language-service": "~9.1.6",
    "@capacitor/cli": "2.4.0",
    "@ionic/angular-toolkit": "^2.1.1",
    "@types/jasmine": "~3.5.0",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "^12.11.1",
    "codelyzer": "^5.1.2",
    "jasmine-core": "~3.5.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~5.0.0",
    "karma-chrome-launcher": "~3.1.0",
    "karma-coverage-istanbul-reporter": "~2.1.0",
    "karma-jasmine": "~3.0.1",
    "karma-jasmine-html-reporter": "^1.4.2",
    "protractor": "~5.4.3",
    "ts-node": "~8.3.0",
    "tslint": "~6.1.0",
    "typescript": "~3.8.3"
  },
  "description": "An Ionic project",
  "cordova": {
    "plugins": {
      "cordova-plugin-whitelist": {},
      "cordova-plugin-statusbar": {},
      "cordova-plugin-device": {},
      "cordova-plugin-splashscreen": {},
      "cordova-plugin-ionic-keyboard": {},
      "cordova-plugin-network-information": {},
      "cordova-plugin-advanced-http": {},
      "cordova-plugin-ionic-webview": {}
    },
    "platforms": [
      "ios"
    ]
  }
}

my service.ts

import { Injectable } from '@angular/core';
import { HttpClient, HttpHeaders } from '@angular/common/http';
import { Observable, of } from 'rxjs';
import { catchError, tap } from 'rxjs/operators';
import { HTTP } from '@ionic-native/http/ngx';
import { from } from 'rxjs';

export class User {
  id: string;
  name: string;
  email: string;
  password: number;
  auth_token: string;
}
@Injectable({
  providedIn: 'root',
})
export class RemoteDataService {
  base_path = 'https://####/public/index.php/';
  dev_path = 'https://####/public_html/public/index.php/';
  httpHeader = {
    headers: new HttpHeaders({ 'Content-Type': 'application/json' }),
  };
  url = 'assets/data/';
  constructor(public http: HttpClient, public nativeHttp: HTTP) {}

  POST(slug: any, user: any): Observable<any> {
    // return from(
    //   this.nativeHttp
    //     .sendRequest(this.dev_path + slug, {
    //       method: 'post',
    //       data: user,
    //       headers: {
    //         'Access-Control-Allow-Origin': '*',
    //         'Content-Type': 'application/json',
    //       },
    //       timeout: 5000,
    //     })
    //     .then(
    //       res => {
    //         console.log('data-->', JSON.parse(res.data));
    //         alert(JSON.stringify(res));
    //         return JSON.parse(res.data);
    //       },
    //       res => console.log('result/' + slug, res)
    //     )
    // );
    return this.http
      .post<User>(this.dev_path + slug, user, this.httpHeader)
      .pipe(catchError(this.handleError<User>('Add user')));
  }