Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial


Andres Sapper
Andres Sapper
9,093 Points

`npm start` fails

I think conf files need to be updated for the "Building Application with React and Redux" course project.

Already ran npm install.

Dario Bahena
Dario Bahena
10,697 Points

double check you have a package.json file and you've done npm install first.

Andres Sapper
Andres Sapper
9,093 Points

This is the exact error I'm getting:

     const webpackConfigurationValidationErrors = validateSchema(webpackConfigurationSchema, options); ^

TypeError: validateSchema is not a function
     at processConfiguredOptions (C:.....\react-redux-course\node_modules\webpack-cli\bin\convert-argv.js:138:48)
     at module.exports (C:.....\react-redux-course\node_modules\webpack-cli\bin\convert-argv.js:132:10)
     at Object.<anonymous> (C:.....\react-redux-course\node_modules\webpack-dev-server\bin\webpack-dev-server.js:92:55)
     at Module.compile (internal/modules/cjs/loader.js:688:30) at Object.Module._extensions..js (internal/modules/cjs/loader.js:699:10)
     at Module.load (internal/modules/cjs/loader.js:598:32) at tryModuleLoad (internal/modules/cjs/loader.js:537:12)
     at Function.Module.load (internal/modules/cjs/loader.js:529:3) at Function.Module.runMain (internal/modules/cjs/loader.js:741:12)
     at startup (internal/bootstrap/node.js:285:19)