Unable to get http functions work

Hi there,
I follow the tutorials

support.wix. com/en/article/velo-exposing-a-site-api-with-http-functions#endpoints and www.youtube. com/watch?v=4yCBplV3MPQ ,
but cannot get my function work.
Here is the simple test code

import { ok, notFound, serverError } from 'wix-http-functions'
import wixData from 'wix-data';

export function get_function1(request) {
    console.log("hello");
    let options = {
        "headers": {
            "Content-Type": "application/json"
        }
    };
    options.body = {
                    "request": request
                };
    return ok(options);
}

Please help. Thanks.

Jason

What’s your domain URL?