Summary:
A lot of people see this error and end up posting in our support group. The root cause is that their js and native versions are out of sync. Adding a helpful description here will unblock them on their own.
Closes https://github.com/facebook/react-native/pull/5605
Reviewed By: svcscm
Differential Revision: D2878376
Pulled By: martinbigio
fb-gh-sync-id: 10dedbdbb4bee3fce5119367223ebb42a3c1b6a4
54e5033221