Error not sent to Sentry

I see this error in my console in production but it’s not sent to Sentry.

Uncaught (in promise) TypeError: Cannot read property ‘value’ of undefined
at t (formatMeta.js:18)
at r (formatMeta.js:33)
at incomingBillActions.js:534

Other errors are sent successfully. Any ideas why?

My project is using React 15.6.1


It looks to me that this was an uncaught rejection on a promise. Promises need to be instrumented explicitly: