React Native : Sample App crashes after upgrading to Mac 10.12.6

Question

I recently updated my Mac to OS.12.6 Sierra.

Previously working React Native (nothing fancy just their AwesomeProject sample app) stopped working.

When I run react-native run-ios I am able to launch the simulator the app just appears, and then crashes back to the iphone app screen without any error messages.

I have uninstalled and reinstalled react-native-cli, upgraded brew, watchman and reinstalled node modules..but no luck

Anyone has any pointers on this ?

Have you tried to uninstall the app in simulator? Have you tried to clear watchman using watchman watch-del-all? — Wanda Ichsanul Isra
– Wanda Ichsanul Isra, Commented Sep 3, 2017 at 8:43
@wlisrausr yes...i have tried both of them (clearing watchman and deleting app from simulator)..its a puzzling one..right ? :) — VPY
– VPY, Commented Sep 3, 2017 at 9:16
Yeah, it is. So, you didn't modified anything inside this sample app? — Wanda Ichsanul Isra
– Wanda Ichsanul Isra, Commented Sep 3, 2017 at 9:27
I did not make any changes...just did react-native init <appname>...after the app was generated...did a cd to that folder and started the emulator via react-native run-ios — VPY
– VPY, Commented Sep 3, 2017 at 10:43

kenhkelly · Accepted Answer · 2017-09-03 14:00:05Z

1

I was having the same issues too after upgrading to Sierra 10.12.6.

I resolved by running create-react-native-app <folder>

And then I ejected it with yarn run eject

yarn run ios after, and the app seems stable.

answered Sep 3, 2017 at 14:00

kenhkelly

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VPY · Accepted Answer · 2017-09-04 00:07:01Z

0

I found out the rootcause of the issue.

Looks like this is a bug with the latest version.

Facebook has acknowledged this as a bug.

The workaround is to create the project with an older version like 0.44

https://github.com/facebook/react-native/issues/15770

answered Sep 4, 2017 at 0:07

VPY

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