Why is localhost:8080 eating up all the RAM?

Question

npm

Good day to all.
There was such a misfortune when working with VueJS:
I write in the terminal npm run serve, localhost: 8080 is created, when I open this address in the browser, there is an endless download, which starts eating up RAM. I have not installed anything recently, except for postman, which I downloaded from the official site.
First I checked if it was the extensions. Disabled them, tried again to open localhost, same problem.
Opened in another browser, did not help. I tried clearing the browser cache, but the problem persists.

I'm inclined to believe that this problem occurs due to vuetify, since the project with pure VueJS works.