O118517.ingest.sentry.io Ublock showing this. What is it used for?

I noticed that UblockOrigin is showing "o118517.ingest.sentry.io" being blocked whenever I go to the Octoprint page on my server. What is that site used for? Should I allow it?

sentry.io is used by OctoPrint for error logs if I'm not mistaken, but thought that would only be from the server side, not the client/browser side.