The error message “fetch API cannot load URL scheme file is not supported” usually occurs when you are trying to use the fetch function to send a request to a file on your local file system, rather than to a server. The fetch function is designed to send HTTP requests to a server, not to access local files on the client’s computer.

To fix this error, you will need to change your code so that it sends the request to a server, rather than trying to access a local file. If you want to access a local file, you will need to use a different approach, such as using the FileReader API or the fs module in Node.js.

Here is an example of how you might use the fetch function to send a request to a server:

fetch('https://example.com/api/v1/users')
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error(error))

This code sends a GET request to the URL https://example.com/api/v1/users, and logs the response data to the console.