cant run ios simulator on cordova

Question

On running the command

cordova emulate ios

I get an error, as below. I actually get rm: could not remove & permission denied errors so I use sudo. I was able to run this no problem, and then after a reboot - although nothing was changed - this function does not work. After build succeeded - deploying to emulator I get this error

 An error was encountered processing the command (domain=com.apple.CoreSimulator.SimError, code=159):
    Invalid device state
    ENOENT: no such file or directory, stat '/Users/user/Library/Logs/CoreSimulator/8F3C9A0F-D432-49A4-84DA-D0480829884A/system.log'
    Error code 1 for command: ios-sim with args: launch,/Users/user/helloworld/platforms/ios/build/emulator/helloworld.app,--devicetypeid,com.apple.CoreSimulator.SimDeviceType.iPhone-4s,--stderr,/Users/user/helloworld/platforms/ios/cordova/console.log,--stdout,/Users/user/helloworld/platforms/ios/cordova/console.log,--exit
    Error: /Users/user/helloworld/platforms/ios/cordova/run: Command failed with exit code 2
        at ChildProcess.whenDone (/usr/local/lib/node_modules/cordova/node_modules/cordova-lib/src/cordova/superspawn.js:139:23)
        at emitTwo (events.js:87:13)
        at ChildProcess.emit (events.js:172:7)
        at maybeClose (internal/child_process.js:818:16)
        at Process.ChildProcess._handle.onexit (internal/child_process.js:211:5)

I have reinstalled sudo npm install ios-sim -g and same error. How can I run it properly?

Answer 1

This happens due to the permissions on mac:

Here are the steps you can use to correct this issue:

Empty the 'platforms' folder in your Cordova project.

Re-run Cordova platform add ios, Cordova build ios, and Cordova emulate ios without sudo.

If you are on a Mac and are still getting a permissions error, make sure all the files in your user's home folder actually belong to that user by running sudo chown -R username /Users/username