The first problem that I found is my server returnthe fallowing error:

"Invalid Host header"

For my vuejs application that I created in the gitpod service
here is the solution to get the dev server running

In the vue.config.js add the fallowing note if you don't have a vue.config file
you need to create one.

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

Then run npm run serve and you are good to go.