Error on plugin install

I get this error when trying to install a plugin. Can you help please ?

$ ionic plugin add ionic-plugin-keyboard
Native thread-sleep not available.
This will result in much slower performance, but it will still work.
You should re-install spawn-sync or upgrade to the lastest version of node if possible.
Check /home/louisro/.nvm/v0.10.33/lib/node_modules/ionic/node_modules/ionic-app-lib/node_modules/cross-spawn/node_modules/spawn-sync/error.log for more details
Error: %s Error: ENOENT, no such file or directory '/home/louisro/Documents/mobileApps/BoardLine/webapp_et_new_PGBuildversion/hooks'
    at Object.fs.readdirSync (fs.js:665:18)
    at Object.setHooksPermission (/home/louisro/.nvm/v0.10.33/lib/node_modules/ionic/node_modules/ionic-app-lib/lib/hooks.js:116:24)
    at Object.IonicTask.run (/home/louisro/.nvm/v0.10.33/lib/node_modules/ionic/lib/ionic/cordova.js:52:13)
    at Object.run (/home/louisro/.nvm/v0.10.33/lib/node_modules/ionic/lib/cli.js:96:32)
    at Object.<anonymous> (/home/louisro/.nvm/v0.10.33/lib/node_modules/ionic/bin/ionic:9:10)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)
    at startup (node.js:119:16)
    at node.js:906:3
Updated the hooks directory to have execute permissions
Fetching plugin "ionic-plugin-keyboard" via npm
Installing "ionic-plugin-keyboard" for android
Plugin "ionic-plugin-keyboard" already installed on browser.
Plugin "ionic-plugin-keyboard" already installed on ios.
Saving plugin to package.json file

Seems the ‘hooks’ directory is missing in your project directory. You can simply create it:
mkdir hooks