Organization Usage Stats shows Errors but the same are not shown under project section

I have integrated sentry with expo managed project. I have not yet deployed app to play store but using below statement to report error to sentry:

throw new Error("My first Sentry error!");

I have a single project under organization. The Organization Usage Stats page shows Errors thrown from above statement but the same are not shown under project section of Organization Usage Stats page. Also, Issues tab does not show any Error.