Having trouble getting a Vue.js project to run

Hi everyone, Here is my repl
https://replit.com/@reg3/decisions#.replit

Running npm run serve on my local machine is fine, but if I do it on Replit I get this in the Console

Error: Cannot find module '/home/runner/decisions/index.js'
Require stack:
- /nix/store/qpnf0dafrfsbcwb4z7cphjm0dff0vl7l-prybar-nodejs-0.0.0-e0d9a52/prybar_assets/nodejs/module-context-hook.js
- /tmp/prybar-nodejs-641783827.js
    at Module._resolveFilename (node:internal/modules/cjs/loader:995:15)
    at Function.resolve (node:internal/modules/cjs/helpers:109:19)

And
Invalid Host header in the Webview

I found a starter Repl for Vue project and have copied this into my webpack and vue config files

module.exports = {
	devServer: {
		disableHostCheck: true
	}
};

I’ve removed the config files as it was causing a crash loop, but if you have a look at my Reply, hopefully things will seem clear