React Native - Port 8081 already in use, packager is either not running or not running correctly Command /bin/sh failed with exit code 2

Question

I\'m trying to get up and running with React Native and I am seeing the message below in Xcode:

Port 8081 already in use, packager is either not running

Answer 1

I figured out the issue: for some reason I didn't kill the process on port 8081 and it was causing Xcode to fail.

Solution:

1. Kill the process on port 8081.
2. Clean Xcode: Xcode Menu > Product > Clean.
3. Reopen Xcode.

Resource:

React-Native Troubleshooting