My Component in React JS application don’t read the Headers from REST-Api – Headers is Empty [duplicate]

I created a Web application built with React.Js and Asp.Net core with C#.

When I do Request from Postman or Swagger I have the headers from Response.
From Swagger:

Request and Response from Swagger

And for the postman is the same result.

In React.js I call my endpoint with the following code:

const res = await fetch(url, options);
const data = await res.json();
console.log("Head " ,res);

My console.log from inspect in app is( the headers is empty):
enter image description here

I do fetch my endpoint with options for Authorization but the Response have empty Headers. Why??

From libary with path node_modulestypescriptliblib.dom.d.tsfetch
And my Fetch:
enter image description here

My program.json

{
  "name": "linkedin",
  "private": true,
  "version": "0.0.0",
  "type": "module",
  "scripts": {
    "dev": "vite",
    "start": "vite preview",
    "lint": "eslint . --ext js,jsx --report-unused-disable-directives --max-warnings 0",
    "preview": "vite preview",
    "build": "vite build --watch"
  },
  "dependencies": {
    "@cloudinary/react": "^1.13.0",
    "@cloudinary/url-gen": "^1.20.0",
    "@fortawesome/fontawesome-free": "^6.6.0",
    "@fortawesome/fontawesome-svg-core": "^6.6.0",
    "@fortawesome/free-solid-svg-icons": "^6.6.0",
    "@fortawesome/react-fontawesome": "^0.2.2",
    "@react-icons/all-files": "^4.1.0",
    "axios": "^1.6.8",
    "cloudinary": "^2.4.0",
    "cors": "^2.8.5",
    "express": "^4.19.2",
    "mssql": "^10.0.2",
    "multer": "^1.4.5-lts.1",
    "path": "^0.12.7",
    "primeicons": "^7.0.0",
    "primereact": "^10.8.2",
    "react": "^18.2.0",
    "react-datepicker": "^7.3.0",
    "react-dom": "^18.2.0",
    "react-icons": "^5.1.0",
    "react-router-dom": "^6.23.1",
    "watch": "^0.13.0"
  },
  "devDependencies": {
    "@types/react": "^18.2.66",
    "@types/react-dom": "^18.2.22",
    "@vitejs/plugin-react": "^4.2.1",
    "eslint": "^8.57.0",
    "eslint-plugin-react": "^7.34.1",
    "eslint-plugin-react-hooks": "^4.6.0",
    "eslint-plugin-react-refresh": "^0.4.6",
    "vite": "^5.4.0",
    "webpack-dev-server": "^5.0.4"
  }
}

Do you have any solution for my problem?