How do I resolve a UnhandledPromiseRejectionWarning with Jest in node.js server

My tests are passing correctly but I keep receiving a UnhandledPromiseRejectionWarning. Any ideas on how to resolve this please? I've tried many solution but none seem to work.

node:32535) UnhandledPromiseRejectionWarning: Error: expect(received).toMatchObject(expected)

Matcher error: received value must be a non-null object

Received has value: undefined (node:32535) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:32535) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

This my test file:

jest.mock("./http");
const { fetchAllUsersData } = require("./http");

test("Data returned from server should be a list of users ", async () => {
  fetchAllUsersData()
    .catch((errorMessage) => expect(errorMessage).toThrowError(Error))
    .then((usersRetrieved) => {
      let users = usersRetrieved[3];
      let userModel = {
        id: 1,
        first_name: "Peggy",
        last_name: "Poppins",
        email: "mpoppins0@squidoo.com",
        ip_address: "192.54.212.191",
        latitude: 34.003135,
        longitude: -117.7228641222,
      };

      expect(users).toMatchObject(userModel);
    });
});

This is my file inside the mock folder:

      const fetchAllUsersData = () => {
        return Promise.resolve({
          data: [
            {
              id: 1,
              first_name: "Merry",
              last_name: "Poppins",
              email: "mpoppins0@squidoo.com",
              ip_address: "192.54.212.191",
              latitude: 34.003135,
              longitude: -117.7228641,
            },
            {
              id: 15,
              first_name: "George",
              last_name: "Foreman",
              email: "gforeman@clear.com",
              ip_address: "12.564.124.521",
              latitude: 23.592254,
              longitude: 125.454227,
            },
          ],
        });
      };

      exports.fetchAllUsersData = fetchAllUsersData;