webpack error

[SatoshiKawabata]

I try to execute npm start and I got then this error.

TypeError: Cannot read property 'properties' of undefined
    at module.exports (/Users/satoshi/practice/netlify-functions-example/node_modules/webpack-cli/bin/config-yargs.js:89:48)
    at Object.<anonymous> (/Users/satoshi/practice/netlify-functions-example/node_modules/webpack-dev-server/bin/webpack-dev-server.js:86:25)
    at Module._compile (module.js:641:30)
    at Object.Module._extensions..js (module.js:652:10)
    at Module.load (module.js:560:32)
    at tryModuleLoad (module.js:503:12)
    at Function.Module._load (module.js:495:3)
    at Function.Module.runMain (module.js:682:10)
    at startup (bootstrap_node.js:191:16)
    at bootstrap_node.js:613:3

This error looks Webpack's error.
plotly/dash-component-boilerplate#12

These modules should be updated.

webpack 
webpack-cli 
webpack-dev-server