express - Chai HTTP end callback doesn't run when ObjectId is modified even though the server returns the response - Sta

I was writing unit tests for my application. When working with tests, it ran as expected. But when I try to ran the test by modifying the objectID but as a valid one to check for not found condition. In this, the code inside the end block doesn't get execute

import { before, beforeEach, describe, test } from "mocha";
import { ExpenseList } from "../src/models/expenseList.model.js";
import { BASE_URL } from "../src/constants.js";
import { User } from "../src/models/users.model.js";
import { generateToken } from "../src/services/jwt.service.js";
import { server } from "../src/index.js";
import { chai, expect } from "./chai.js";

describe.only("Expense List Tests", () => {
    const url = `${BASE_URL}/explists`;
    let token;
    let id;
    before((done) => {
        User.create({
            email: "[email protected]",
            password: "Test@123",
            name: "Test User",
        }).then((res) => {
            id = res._id;
            token = generateToken({ id, name: res.name });
            done();
        });
    });
    beforeEach((done) => {
        ExpenseList.deleteMany({}).then((res) => {
            done();
        });
    });

    //7 passing test excluded for simplicity

    test("Not found ID", done => {
            ExpenseList.create({
                title: "Test List",
                createdBy: id
            }).then(exp => {
                const fakeId = exp.id.slice(0, 20) + "1234";
                console.log(fakeId);
                chai.request.execute(server)
                    .get(`${url}/${fakeId}`)
                    .set("Authorization", token)
                    .end((err, res) => {
                        try{
                            expect(res).to.have.status(404);
                            expect(res.body).to.be.an('object');
                            expect(res.body).to.have.property('errors');
                            expect(res.body.errors).to.be.an('object');
                            expect(res.body.errors).that.has.property('id');
                            expect(res.body.errors.id).to.be.a('string');
                            done();
                        }
                        catch(err){
                            done(err)
                        }
                    })
            })
        })
    })


    after((done) => {
        User.deleteMany({}).then((res) => {
            done();
        });
    });
});

The test ran out of time and throws the timeout error by saying

677d5e15b9d57d3843621234
      1) Not found ID


  7 passing (10s)
  1 failing

  1) Expense List Tests
       GET /explist/:id
         Not found ID:
     Error: Timeout of 10000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (/Users/santhosh/Documents/Whizlab Tasks/Week 3/ExpenseTracker/expense-backend/test/expenseList.spec.js)
      at listOnTimeout (node:internal/timers:594:17)
      at process.processTimers (node:internal/timers:529:7)

If i provide correct id, it enters into the end block. But when the id is not found it comes with this error. I debugged the code and found that the code escapes the end block before it returns the response. I don't know why!