Running Sentry in headless Chrome on CircleCI with Cypress

I’m using Cypress to run front-end tests. I’m using CircleCI to run them on, using the Chrome headless browser (using this Docker container).

I’ve SSHed into CircleCI to make sure that it’s being built correctly, which it is.

Does anybody know if it’s either the headless browser that doesn’t work with Sentry? Or that CircleCI doesn’t play well with Sentry?

The app is a front-end only app, there’s no server-side, so all errors are reported on the front-end.