Retrieving data asynchronously
The file fetch_info.txt is simply a sample text file that resides on the server and is used to demonstrate the working of asynchronous data retrieval.
Having seen hits on my Async Await page for those searching for "fetch_info.txt" I can only conclude that it is not well understood what the file is and what it contains. In my example the file: fetch_info.txt just contains text that I want to echo back to the page.
The example that uses this file is to be found on my page on the Fetch API
fetch_info.txt is just a text file that exists on your server.
You retrieve the contents of this file asynchronously - see my example for this