Navbar back button error in F7 Vue

I cloned the latest F7+Webpack template here to start my new project yesterday
Everything was okay initially but today I have run into issues with the navbar back button.

First, when I navigate to any page, I find that the page is placed twice in the DOM, both as previous page and as current page

(I was unable to put two images because am a new member)

Then when I click on back button in Navbar I get this error in console:

What could be the problem here. TIA.

The issue seems to be gone today. Maybe the node server was just tired :neutral_face:

oh no. Less than an hour later the issue is back. :confused:

I’ve got the same problem.

so will wait for a reply.