npm run devを実行すると新しいlaravel 5.4のインストールにエラーが発生する

Question

新しいlaravel 5.4のインストールでnpm run devを実行すると、次のエラーが発生する。それを越える方法を理解するのに役立つ必要があります。

 
> @ dev /Users/rjacobsen/development/private/projects/laravel-54 
> npm run development 


> @ development /Users/rjacobsen/development/private/projects/laravel-54 
> cross-env NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js 

95% emitting                  

ERROR Failed to compile with 2 errors                                             8:59:48 AM 

These dependencies were not found: 

* /Users/rjacobsen/development/private/projects/laravel-54/resources/assets/js/app.js in multi ./resources/assets/js/app.js ./resources/assets/sass/app.scss 
* /Users/rjacobsen/development/private/projects/laravel-54/resources/assets/sass/app.scss in multi ./resources/assets/js/app.js ./resources/assets/sass/app.scss 

To install them, you can run: npm install --save /Users/rjacobsen/development/private/projects/laravel-54/resources/assets/js/app.js /Users/rjacobsen/development/private/projects/laravel-54/resources/assets/sass/app.   Asset  Size Chunks    Chunk Names 
     /js/app.js 2.99 kB  0 [emitted] /js/app 
mix-manifest.json 32 bytes   [emitted] 
npm ERR! code ELIFECYCLE 
npm ERR! errno 2 
npm ERR! @ development: `cross-env NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js` 
npm ERR! Exit status 2 
npm ERR! 
npm ERR! Failed at the @ development script. 
npm ERR! This is probably not a problem with npm. There is likely additional logging output above. 

npm ERR! A complete log of this run can be found in: 
npm ERR!  /Users/rjacobsen/.npm/_logs/2017-07-13T12_59_49_172Z-debug.log 
npm ERR! code ELIFECYCLE 
npm ERR! errno 2 
npm ERR! @ dev: `npm run development` 
npm ERR! Exit status 2 
npm ERR! 
npm ERR! Failed at the @ dev script. 
npm ERR! This is probably not a problem with npm. There is likely additional logging output above. 

npm ERR! A complete log of this run can be found in: 
npm ERR!  /Users/rjacobsen/.npm/_logs/2017-07-13T12_59_49_202Z-debug.log 

Answer 1

私のマシンのphpバージョンに問題があるようです。これはphpを7.1にアップグレードした後の問題ではありません。