Getting cors error while trying to make HTTP GET request

Question

I am trying to make a http get request, I am getting on network tab CORS-ERROR.

I am running my client on live-server (http://127.0.0.1:5000/client/contactAdmin.html) and the api I am trying to reach to is (http://localhost:5000/api/form/contactAdmin)

app.use('/api/form', formRoute);

router.get('/contactAdmin', async (req, res) => {
  const allForms = await Form.find({});

  return res.status(200).json({ allForms });
});

client:

const renderForms = async () => {
  try {
    const response = await fetch(
      'http://localhost:5000/api/form/contactAdmin',
      {
        method: 'GET',
        headers: {
          'Content-type': 'application/json; charset=UTF-8',
        },
      }
    );
    return response;
  } catch (error) {
    console.log(error);
  }
};

renderForms();

Network tab: