All of a sudden I can no longer user the tester on Chrome. Everything else (builder, DB, services) are working fine. Just when I try to test the app the first page of the app never loads. I started having this problem about 20 mins ago before that the tester was working fine. I have cleared all my caches in Chrome but it did not help.
I was able to run the tester on Safari, just Chrom has the issue.