run build problem

[Juanchi36]

Hi, when I try to run build throws this error:

Error: 'output.filename' is required, either in config file or as --output-filename
at processOptions (C:\Users\juanm\Documents\IFTS_2do\Taller\app-craft-beer\node_modules\webpack\bin\convert-argv.js:507:11)
at processConfiguredOptions (C:\Users\juanm\Documents\IFTS_2do\Taller\app-craft-beer\node_modules\webpack\bin\convert-argv.js:150:4)
at module.exports (C:\Users\juanm\Documents\IFTS_2do\Taller\app-craft-beer\node_modules\webpack\bin\convert-argv.js:112:10)
at yargs.parse (C:\Users\juanm\Documents\IFTS_2do\Taller\app-craft-beer\node_modules\webpack\bin\webpack.js:171:41)
at Object.Yargs.self.parse (C:\Users\juanm\Documents\IFTS_2do\Taller\app-craft-beer\node_modules\webpack\node_modules\yargs\yargs.js:533:18)
at Object. (C:\Users\juanm\Documents\IFTS_2do\Taller\app-craft-beer\node_modules\webpack\bin\webpack.js:152:7)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12).

Thanks!!!