I always get this error message when I run \"Ionic start project name\":
Running command - failed![ERROR] An error occurred while run
I received a similar error and now have it working.
First make sure you have the latest version
brew update
Remove your previous instance of node:
brew uninstall node
Then reinstall the latest version:
brew install node
And then make sure it is symlinked into /usr/local if it isn't already. You would get an error to let you know to complete this step.
brew link --overwrite node
More details on how to install/upgrade node are also available.