Can't receive events, even with a clean react-app

I’m trying to test Sentry for a few days, but I really cant see any issues on server.
My app uses Next.js + TypeScript.
Tryed every single guide on docs and got no effect.

Then tryed to create a brand new react-app. For the first time was conected and send issues but dont work anymore.
Today I’ve created a new react-app and surprisely he dont send any issue. Dont know what to do anymore…