Failed to build DependencyGraph: Watchman error: query failed: synchronization failed: Operation timed out.

I have searched for this issue and seemed like no one have exact solution for this. I’ve tried to restart packager, watchman and my computer too.

 ┌────────────────────────────────────────────────────────────────────────────┐
 │  Running packager on port 8081.                                            │
 │                                                                            │
 │  Keep this packager running while developing on any JS projects. Feel      │
 │  free to close this tab and run your own packager instance if you          │
 │  prefer.                                                                   │
 │                                                                            │
 │  https://github.com/facebook/react-native                                  │
 │                                                                            │
 └────────────────────────────────────────────────────────────────────────────┘
Looking for JS files in
   /Users/anhpt/Documents/ReactProjects/sample

[4:50:26 PM] <START> Building Dependency Graph
[4:50:26 PM] <START> Crawling File System
[Hot Module Replacement] Server listening on /hot

React packager ready.

[4:50:30 PM] <START> request:/index.ios.bundle?platform=ios&dev=true&minify=false
[4:50:30 PM] <START> find dependencies
Failed to build DependencyGraph: Watchman error: query failed: synchronization failed: Operation timed out. Make sure watchman is running for this project. See https://facebook.github.io/watchman/docs/troubleshooting.html.
Error: Watchman error: query failed: synchronization failed: Operation timed out. Make sure watchman is running for this project. See https://facebook.github.io/watchman/docs/troubleshooting.html.
    at /Users/anhpt/Documents/ReactProjects/sample/node_modules/node-haste/lib/crawlers/watchman.js:63:11
    at process._tickCallback (node.js:406:9)

watchman 4.6.0 OS X 10.11.2

[petehouston]

Some recommendations:

• The project directory is mapped or symlink-ed by other apps or services, such as mapping with Vagrant box, mapped as a Dropbox directory… Don’t do this, watchman will fail to watch.
• Re-install Homebrew and watchman if you upgrade your OS X version. Any OS X update will mess with Homebrew directory.
• Give sufficient read/write permission to directory. 0644 will be fine.
• Completely clear all node caches. Make sure to run npm or Yarn as regular users. Execute them as superuser will cause node modules completely stranger and can’t be watched.

[hramos]

Closing this issue because it has been inactive for a while. If you think it should still be opened let us know why.