Plugin error while building ionic app

Question

during build ionic app, this error is shown:

Error occurred during command execution from a CLI plugin (@ionic/cli-plugin-cordova). Your plugins may be out of date. TypeError: env.runcmd is not a function

Answer 1

This error message indicates that the Ionic CLI version is incompatible with other CLI plugins (see https://github.com/ionic-team/ionic/issues/12561).

Please run the following commands in your project directory (where you package.json is):

npm i -g ionic@latest
npm i --save-dev --save-exact ionic@latest

This will install the latest Ionic CLI version (currently 3.7.0) globally and locally. After that the error should no longer occur.