[Vuejs]-Vuejs Unexpected token < in JSON at position 0 from express server

The problem is

let data = await fetch(`127.0.0.1:4433/users`);

the url has to be prefixed http://

that’s the only change i have made & it has worked

found the answer here

Fetch returns html source of the my own index.html

i.e. the answer by @R.Tero