react-native: [Packager] Cannot read property 'root' of null
Hello, I tried to update react-native or reinstalled it but no positive effect. This happens right after launching the app. Does anyone has more info on this ? Thanks
TypeError: Cannot read property 'root' of null
at /Users/isasportas/Projects/canalplus/iOS/RemoteX1/node_modules/react-native/packager/react-packager/src/DependencyResolver/crawlers/index.js:16:84
at tryCallOne (/Users/isasportas/Projects/canalplus/iOS/RemoteX1/node_modules/react-native/node_modules/promise/lib/core.js:37:12)
at /Users/isasportas/Projects/canalplus/iOS/RemoteX1/node_modules/react-native/node_modules/promise/lib/core.js:103:15
at flush (/Users/isasportas/Projects/canalplus/iOS/RemoteX1/node_modules/react-native/node_modules/promise/node_modules/asap/raw.js:50:29)
at process._tickCallback (node.js:355:11)
About this issue
- Original URL
- State: closed
- Created 9 years ago
- Reactions: 1
- Comments: 62 (17 by maintainers)
I’ve bought a new MacBook Pro and the problem fixed.
Ah, good tip @chirag04: updating watchman (
brew update
andbrew upgrade watchman
) fixed this issue for me.this works for me
Works now. Notice you seem to have forgotten a
-
I think to make sure run them separately like this because parts of the above command failed for me.
@alejomendoza - try
brew uninstall watchman
andbrew install watchman -HEAD
works for me. When I use brew upgrade watchman,only get
Error: watchman-HEAD already installed
.brew update && brew unlink watchman && brew install watchman -HEAD
then closing the terminal and rebuilding the app worked for me.and
Worked for me … Before was getting error as I had two versions of watchman installed .
@xcatliu run the following commands: “brew update && brew upgrade watchman”
@jaygarcia update your watchman