npm start error with create-react-app

Question

I have a project who I didn t touch for 2 weeks  I take it back and now when I try to run npm start I got this error    gt  react-scripts start  sh  react-scripts  command not found  npm ERR  Darwin 16 0 0 npm ERR  argv   usr local bin node    usr local bin npm   start  npm ERR  node v6 7 0 npm ERR  npm  v3 10 3 npm ERR  file sh npm ERR  code ELIFECYCLE npm ERR  errno ENOENT npm ERR  syscall spawn npm ERR  UpScore 0 6 0 start   react-scripts start  npm ERR  spawn ENOENT npm ERR  npm ERR  Failed at the UpScore 0 6 0 start script  react-scripts start   npm ERR  Make sure you have the latest version of node js and npm installed  npm ERR  If you do  this is most likely a problem with the UpScore package  npm ERR  not with npm itself  npm ERR  Tell the author that this fails on your system  npm ERR      react-scripts start npm ERR  You can get information on how to open an issue for this project with  npm ERR      npm bugs UpScore npm ERR  Or if that isn t available  you can get their info via  npm ERR      npm owner ls UpScore npm ERR  There is likely additional logging output above     node 6 7 0 npm 3 10 3 mac sierra 10 12   package json       name    UpScore      version    0 6 0      private   true     devDependencies          react-addons-test-utils     15 3 1        react-scripts    0 4 1        react-test-renderer     15 3 1        redux-logger     2 6 1          dependencies           yoshokatana medium-button     1 1 0        axios     0 14 0        bcrypt     0 8 7        bcrypt-nodejs    0 0 3        bcryptjs     2 3 0        body-parser     1 15 2        connect-flash     0 1 1        cookie-parser     1 4 3        draft-js     0 8 1        draft-js-editor     1 7 2        draft-js-export-html     0 4 0        ejs     2 5 2        email-verification     0 4 5        express     4 14 0        express-session     1 14 1        flexboxgrid     6 3 1        highlight js     9 6 0        immutable     3 8 1        katex     0 6 0        lodash     4 15 0        markdown-it-mathjax     1 0 3        material-ui     0 15 4        medium-editor     5 22 0        minutes-seconds-milliseconds     1 0 3        moment     2 15 0        moment-duration-format     1 3 0        mongod     1 3 0        mongodb     2 2 9        mongoose     4 6 0        monk     3 1 2        morgan     1 7 0        normalize css     3 0 3        passport     0 3 2        passport-local     1 0 0        react     15 3 1        react-dom     15 3 1        react-markdown     2 4 2        react-medium-editor     1 8 1        react-redux     4 4 5        react-redux-form     0 14 5        react-rich-markdown     1 0 1        react-router     2 7 0        react-router-redux     4 0 5        react-tap-event-plugin     1 0 0        react-tinymce     0 5 1        redux     3 6 0        redux-form     6 0 5        redux-form-material-ui     4 0 1        redux-promise-middleware     4 0 0        redux-thunk     2 1 0        reselect     2 5 3        screenfull     3 0 2          scripts          start    react-scripts start        start prod    pushstate-server build        build    react-scripts build        test    react-scripts test --env jsdom        eject    react-scripts eject        server    cd client api  amp  amp  pm2 start server js --watch        proxy    http   128 199 139 144 3000          eslintConfig          extends      node modules react-scripts config eslint js          I try to clone my repos too and get the same error  If someone can give me some way to find what happen  Thank you

User · Answer

add environment variables in windows  C  WINDOWS System32 C  Program Files nodejs C  Program Files nodejs node modules npm bin C  WINDOWS System32 WindowsPowerShell v1 0 C  Users your system name without curly braces  AppData Roaming npm  these 5 are must in path  and use the latest version of node js

User · Answer

I have faced the following issue     Please find the solution    Add  C  Windows System32  to the global PATH environment variable  Check whether the environment variables has been created for nodejs npm and composer  if not create one      Run your app

User · Answer

I might be very late to answer this question but this is what has worked for me and it might help someone to get back on the development track  nvm install v12 0    You may need to install nvm  if not already done rm -rd node modules  npm cache clean --force npm install  Cheers

User · Answer

For me it was simply that I hadn t added react-scripts to the project so   npm i -S react-scripts   If this doesn t work  then rm node modules as suggested by others  rm -r node modules npm i

User · Answer

it is simple but the first time it takes time a few steps to set      you have the latest version on node   go to the environment variable and set the path  quot  SystemRoot  system32 quot       run cmd as administrator mode   write command npm start

User · Answer

I solve this issue by running following command  echo fs inotify max user watches 524288   sudo tee -a  etc sysctl conf  amp  amp  sudo sysctl -p   hope it helps

User · Answer

I have created react project locally  This reason of occurring this problem  for me  was that I didn t use sudo before npm and it needs root access    gt  sudo npm start  PS1  For windows users  the powershell or command line should be run as administrator  PS2  If use want to solve the root access issue  you can see this post

User · Answer

incase you happened to be so unlucky like me that spent three 3  days in a row trying to solve this problem every solution proposed here failed me     create a  env file in your project root and add this code SKIP PREFLIGHT CHECK true  Good luck

User · Answer

My issue was stemming from permission issues  I solved mine by following this https   docs npmjs com resolving-eacces-permissions-errors-when-installing-packages-globally

User · Answer

I fix this using this following command   npm install -g react-scripts

User · Answer

Yes you should not install react-scripts globally  it will not work   I think i didn t use the --save when i first created the project  on another machine   so for me this fixed the problem    npm install --save react react-dom react-scripts

User · Answer

Author of Create React App checking in   You absolutely should not be installing react-scripts globally  You also don t need   node modules react-scripts bin  in package json as this answer implies   If you see this   npm ERR  UpScore 0 6 0 start   react-scripts start  npm ERR  spawn ENOENT   It just means something went wrong when dependencies were installed the first time   I suggest doing these three steps    npm install -g npm latest to update npm because it is sometimes buggy  rm -rf node modules to remove the existing modules  npm install to re-install the project dependencies    This should fix the problem  If it doesn t  please file an issue with a link to your project and versions of Node and npm

User · Answer

Add  env file with  SKIP PREFLIGHT CHECK true  than npm start

User · Answer

As Dan said correctly       If you see this    npm ERR  UpScore 0 6 0 start   react-scripts start  npm ERR  spawn ENOENT      It just means something went wrong when dependencies were installed the first time    But I got something slightly different because running npm install -g npm latest to update npm might sometimes leave you with this error   npm ERR  code ETARGET npm ERR  notarget No matching version found for npm lates npm ERR  notarget In most cases you or one of your dependencies are requesting npm ERR  notarget a package version that doesn t exist    so  instead of running npm install -g npm latest  I suggest running the below steps    npm i -g npm   which will also update npm  rm -rf node modules   amp  amp  npm cache clean    to remove the existing modules and clean the cache   npm install   to re-install the project dependencies    This should get you back on your feet

User · Answer

Type unset HOST in your terminal

User · Answer

It seems like you don t have react-scripts in your global environment  Two possibility are available here    npm install -g react-scripts  or in your package json change your script part like this       scripts          start      node modules react-scripts bin react-scripts js start        start prod    pushstate-server build        build      node modules react-scripts bin react-scripts js build        test      node modules react-scripts bin react-scripts js test --env jsdom        eject      node modules react-scripts bin react-scripts js eject        server    cd client api  amp  amp  pm2 start server js --watch        proxy    http   128 199 139 144 3000

User · Answer

It occurred to me but none of the above worked   events js 72         throw er     Unhandled  error  event                  npm ERR  UpScore 0 6 0 start   react-scripts start  npm ERR  spawn ENOENT  Error  spawn ENOENT     at errnoException  child process js 1000 11      at Process ChildProcess  handle onexit  child process js 791 34    This happens because you might have installed react-scripts globally   To make this work       Go to your C  Users  lt USER gt  AppData Roaming Delete npm and npm-cache directories     don t worry you can install npm globally later  Go back to your application directory and remove node modules folder Now enter npm install to install the dependencies  delete package-lock json if its already created  Now run npm install --save react react-dom react-scripts Get it started with npm start    This should get you back on track    Happy Coding

User · Answer

This is to help others completely new to react and who area having problems just starting a first app even though they did a fresh install and try using npm install and the other fixes I saw around the forums    Running it on Windows 10 with all the latest npm create-react-app installed and got failure after failure on a simple npm start in a simple my-app demo folder   Spent a long time with what looks similar to the OP error at first but is slightly different  This starts with ERRNO 4058 and continues with code  ENOENT  syscall   spawn cmd   path    cmd       Eventually worked out from github create-react-app forum that a quick fix for this is registering cmd in the  path  variable  To do this go to System Properties Environment variables  Click on path variable edit and and add new entry of C  Windows System32  Restart CMD prompt and I was good to go

User · Answer

I had the same error when running     npm start   npm ERR  code ELIFECYCLE npm ERR  errno 1 npm ERR  protest-app 0 1 0 start   react-scripts start  npm ERR  Exit status 1 npm ERR  npm ERR  Failed at the protest-app 0 1 0 start script    I broke my head on several tabs and applying Solutions from other devs and nothing   Until  even using Ubuntu  I closed my vscode and restarted my pc and all my problems were solved   kkkk zueira  just this one

User · Answer

it s possible that conflict with other library  delete node modules and again npm install

User · Answer

This occurs when the node modules gets out of sync with package json      Run the following at the root and any sub service  sub-folder that might have node modules folder within it   rd node modules  S  Q npm install

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