Builder app can't connect to localhost:3000

Technical Questions
1

Hi,

I’ve created a new NextJS app and integrated builder as described in the Automated Integration guide. However when I open the /builder-demo page in the Builder.io application I get an error saying that Builder can’t connect to http://localhost:3000/builder-demo

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When I deploy the page to Vercel, Builder.io app works without problems. What may be causing Builder.io app not being able to connect to the dev server running on localhost?

I use NodeJS v18.19.1.

2

Seems like it was problem with my web browser. It doesn’t work in Brave, but it works in Firefox.