TypeError: Object [object Object] has no method 'updateFrom'

[sentryapp21-9]

Sentry Issue: INTERNAL-1

TypeError: Object [object Object] has no method 'updateFrom'
  at poll (../../sentry/scripts/views.js:389:46)
  at merge (../../sentry/scripts/views.js:268:16)
  at member (../../sentry/scripts/views.js:283:50)

This is an example JavaScript exception