Localhost:3000 showing blank - Gulp Watch

Using the command gulp watch opens a blank localhost:3000

I have setup Trellis and bedrock and Sage. When I gulp watch the theme BrowserSync begins to watch but can make updates.

What does the error log say?

No error just stays stuck on [Browsersync] Reloading Browsers…
then eventually the page outputs ERR_CONNECTION_REFUSED

But my Virtualbox works at the dev domain I set within trellis. But again gulp does not seem to be connecting to this.

Without posting more details it’s hard to say. Did you already configure Sage so that Browsersync knows what your dev URL is? You can find more info about that in the Sage README/docs.

Yes I’ve configured in sage manifest.json file with my dev URL.