Unable to preview or run my app

Bugs
1

Hi all, i’m getting this message whenever i try to preview or run my app:

Your browser was unable to load the application data. We’ve been notified of the issue. Please try again in a few moments and make sure not to use ad-blockers.

It’s been happening for the past half hour or so. Any advice?

Thanks

2

I am having the same issue. Very frustrating.
I assume you fixed it since this was 4 days ago?
Any advice? It has been happening to me off and on for two weeks now.

Thanks.