I'm having trouble with running react-native run-ios in any RN project on my computer (including if I start a brand new project from scratch). Unless I manually start the packager using react-native start before running react-native run-ios, the build will fail with the error:
Port 8081 already in use, packager is either not running or not running correctly
It's important to note that port 8081 is not in use on my computer. I've tried different ports as well, but the error is not caused by port collision, which is the case in basically every other SO question related to this error.
The problem does also not occur if I use Xcode to run or build the project, it only happens when I use the RN CLI.
What could be causing this issue?
I found the problem. I had Nodechef CLI installed, which hi-jacks the "nc" command which is used in the startup build to run Netcat.