Why is my cors headers not matching even when they are the same?

I am using passport js with REACT and during fetching the logged in user-data the cors header of fetch isnt matching even though they are the same.

this is where i am sending fetch to

And address I am fetching from

    origin: 'http://localhost:3001/profilebuilder',
    methods: "GET,POST,PUT,DELETE",
    credentials: true,
app.listen("5000", () => {
  console.log("Server is running!");

this is the client code

 fetch("http://localhost:5000/auth/login/success", {
          method: "GET",
          credentials: "include",
          headers: {
            Accept: "application/json",
            "Content-Type": "application/json",
            "Access-Control-Allow-Credentials": true,
          .then((response) => {
            if (response.status === 200) return response.json();
            throw new Error("authentication has been failed!");
          .then((resObject) => {
          .catch((err) => {

I am getting this error

Access to fetch at 'http://localhost:5000/auth/login/success' 
from origin 'http://localhost:3001' has been blocked by CORS 
policy: Response to preflight request doesn't pass access control
 check: The 'Access-Control-Allow-Origin' header has a value 'http://localhost:3001/profilebuilder' 
that is not equal to the supplied origin. Have the server 
send the header with a
valid value, or, if an opaque response serves your needs,
 set the request's mode to 'no-cors' to fetch the resource with CORS disabled.