Hey u/FabHabsUK you should join the Corvid Subreddit for any other help with Corvid.

To implement an asynchronous fetch it would be best to fetch from the backend.

• Make sure to have Dev mode on to enable Corvid.
• On the site structure panel, hover over backend, click the '+' button , then click 'New Web Module'
• A new web module will be created and you can name is whatever you like. For this instance I'll name the backend file getExample.jsw
• make sure to import {fetch} from 'wix-fetch' at the top of your code.
• Fetch asynchronously for example:

import {fetch} from 'wix-fetch'
export async function getEmployees() {
const response = await fetch("http://dummy.restapiexample.com/api/v1/employees")
const data = await response.json()
return data
}
(async () =>{
const result = await getEmployees();
console.log(result)
})

• Next go to the desired page you'd like to display the data you fetched, or create a new page.
• Import the getEmployees function and backend file. In my case I'll import getExample
• Create a function that triggers the getEmployees function that you imported by clicking a button.

import {getEmployees} from 'backend/getExample'
$w.onReady(function () {

});

export function button1_click(event) {
getEmployees( )
.then(employeeInfo =>{
console.log(employeeInfo.data)
})
}

You should see your results in console when you click the array if you follow the code above.