Sentry não está trabalhando no front -end
Apperently using uBlock extention will block requests to sentry.io
also Brave browser has build in tracking blocker extention "SHIELDS UP".
Really annoying. Error trackers should never be blocked.
Solution (not simple) :
use reverse proxy
read through this for more info : https://github.com/getsentry/sentry-javascript/issues/2916
SamuraiR4cc00n