Vue app compiles successfully but does not load in browser

I have a Vue app that outputs the following in the console after npm run serve.

 DONE  Compiled successfully in 17450ms                                                                                         2:15:55 PM


  App running at:
  - Local:   http://localhost:8080/ 
  - Network: http://10.0.0.72:8080/

  Note that the development build is not optimized.
  To create a production build, run npm run build.

No issues found.

However, the app will not load on http://localhost:8080/ . The page displays the "This site cannot be reached.The connection was reset." message.

Other pages load fine, including the Node server I am using for the backend, running on localhost:3002.

I have tried removing the node_modules and running npm install again, but that hasn't fixed it. With the app compiling ok there is little help troubleshoot. There are also no errors in the browser dev tools console.

Does anyone know what might be going wrong or how to debug this?

Thanks!

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