Need help getting started with Ionic 3


#1

Hi everyone! I am new to Ionic and I have some troubles getting started even with the step by step guide of Ionic. When I run the command ionic start myApp tabs I get the following result:

× Running command - failed!
[ERROR] An error occurred while running npm i (exit code 1):


        npm WARN deprecated object-keys@0.2.0: Please update to the latest object-keys

        > node-sass@4.5.3 install C:\Users\guill\myApp\node_modules\node-sass
        > node scripts/install.js

        Downloading binary from https://github.com/sass/node-sass/releases/download/v4.5.3/win32-x64-59_binding.node
        Cannot download "https://github.com/sass/node-sass/releases/download/v4.5.3/win32-x64-59_binding.node":

        HTTP error 404 Not Found

        Hint: If github.com is not accessible in your location
               try setting a proxy via HTTP_PROXY, e.g.

               export HTTP_PROXY=http://example.com:1234

        or configure npm proxy via

               npm config set proxy http://example.com:8080

        > uglifyjs-webpack-plugin@0.4.6 postinstall C:\Users\guill\myApp\node_modules\uglifyjs-webpack-plugin
        > node lib/post_install.js


        > node-sass@4.5.3 postinstall C:\Users\guill\myApp\node_modules\node-sass
        > node scripts/build.js

        Building: C:\Program Files\nodejs\node.exe C:\Users\guill\myApp\node_modules\node-gyp\bin\node-gyp.js rebuild
        --verbose --libsass_ext= --libsass_cflags= --libsass_ldflags= --libsass_library=
        gyp info it worked if it ends with ok
        gyp verb cli [ 'C:\\Program Files\\nodejs\\node.exe',
        gyp verb cli   'C:\\Users\\guill\\myApp\\node_modules\\node-gyp\\bin\\node-gyp.js',
        gyp verb cli   'rebuild',
        gyp verb cli   '--verbose',
        gyp verb cli   '--libsass_ext=',
        gyp verb cli   '--libsass_cflags=',
        gyp verb cli   '--libsass_ldflags=',
        gyp verb cli   '--libsass_library=' ]
        gyp info using node-gyp@3.6.2
        gyp info using node@9.0.0 | win32 | x64
        gyp verb command rebuild []
        gyp verb command clean []
        gyp verb clean removing "build" directory
        gyp verb command configure []
        gyp verb check python checking for Python executable "python2" in the PATH
        gyp verb `which` failed Error: not found: python2
        gyp verb `which` failed     at getNotFoundError (C:\Users\guill\myApp\node_modules\which\which.js:13:12)
        gyp verb `which` failed     at F (C:\Users\guill\myApp\node_modules\which\which.js:68:19)
        gyp verb `which` failed     at E (C:\Users\guill\myApp\node_modules\which\which.js:80:29)
        gyp verb `which` failed     at C:\Users\guill\myApp\node_modules\which\which.js:89:16
        gyp verb `which` failed     at C:\Users\guill\myApp\node_modules\isexe\index.js:42:5
        gyp verb `which` failed     at C:\Users\guill\myApp\node_modules\isexe\windows.js:36:5
        gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:166:21)
        gyp verb `which` failed  python2 { Error: not found: python2
        gyp verb `which` failed     at getNotFoundError (C:\Users\guill\myApp\node_modules\which\which.js:13:12)
        gyp verb `which` failed     at F (C:\Users\guill\myApp\node_modules\which\which.js:68:19)
        gyp verb `which` failed     at E (C:\Users\guill\myApp\node_modules\which\which.js:80:29)
        gyp verb `which` failed     at C:\Users\guill\myApp\node_modules\which\which.js:89:16
        gyp verb `which` failed     at C:\Users\guill\myApp\node_modules\isexe\index.js:42:5
        gyp verb `which` failed     at C:\Users\guill\myApp\node_modules\isexe\windows.js:36:5
        gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:166:21)
        gyp verb `which` failed   stack: 'Error: not found: python2\n    at getNotFoundError
        (C:\\Users\\guill\\myApp\\node_modules\\which\\which.js:13:12)\n    at F
        (C:\\Users\\guill\\myApp\\node_modules\\which\\which.js:68:19)\n    at E
        (C:\\Users\\guill\\myApp\\node_modules\\which\\which.js:80:29)\n    at
        C:\\Users\\guill\\myApp\\node_modules\\which\\which.js:89:16\n    at
        C:\\Users\\guill\\myApp\\node_modules\\isexe\\index.js:42:5\n    at
        C:\\Users\\guill\\myApp\\node_modules\\isexe\\windows.js:36:5\n    at FSReqWrap.oncomplete (fs.js:166:21)',
        gyp verb `which` failed   code: 'ENOENT' }
        gyp verb check python checking for Python executable "python" in the PATH
        gyp verb `which` failed Error: not found: python
        gyp verb `which` failed     at getNotFoundError (C:\Users\guill\myApp\node_modules\which\which.js:13:12)
        gyp verb `which` failed     at F (C:\Users\guill\myApp\node_modules\which\which.js:68:19)
        gyp verb `which` failed     at E (C:\Users\guill\myApp\node_modules\which\which.js:80:29)
        gyp verb `which` failed     at C:\Users\guill\myApp\node_modules\which\which.js:89:16
        gyp verb `which` failed     at C:\Users\guill\myApp\node_modules\isexe\index.js:42:5
        gyp verb `which` failed     at C:\Users\guill\myApp\node_modules\isexe\windows.js:36:5
        gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:166:21)
        gyp verb `which` failed  python { Error: not found: python
        gyp verb `which` failed     at getNotFoundError (C:\Users\guill\myApp\node_modules\which\which.js:13:12)
        gyp verb `which` failed     at F (C:\Users\guill\myApp\node_modules\which\which.js:68:19)
        gyp verb `which` failed     at E (C:\Users\guill\myApp\node_modules\which\which.js:80:29)
        gyp verb `which` failed     at C:\Users\guill\myApp\node_modules\which\which.js:89:16
        gyp verb `which` failed     at C:\Users\guill\myApp\node_modules\isexe\index.js:42:5
        gyp verb `which` failed     at C:\Users\guill\myApp\node_modules\isexe\windows.js:36:5
        gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:166:21)
        gyp verb `which` failed   stack: 'Error: not found: python\n    at getNotFoundError
        (C:\\Users\\guill\\myApp\\node_modules\\which\\which.js:13:12)\n    at F
        (C:\\Users\\guill\\myApp\\node_modules\\which\\which.js:68:19)\n    at E
        (C:\\Users\\guill\\myApp\\node_modules\\which\\which.js:80:29)\n    at
        C:\\Users\\guill\\myApp\\node_modules\\which\\which.js:89:16\n    at
        C:\\Users\\guill\\myApp\\node_modules\\isexe\\index.js:42:5\n    at
        C:\\Users\\guill\\myApp\\node_modules\\isexe\\windows.js:36:5\n    at FSReqWrap.oncomplete (fs.js:166:21)',
        gyp verb `which` failed   code: 'ENOENT' }
        gyp verb could not find "python". checking python launcher
        gyp verb could not find "python". guessing location
        gyp verb ensuring that file exists: C:\Python27\python.exe
        gyp ERR! configure error
        gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
        gyp ERR! stack     at PythonFinder.failNoPython
        (C:\Users\guill\myApp\node_modules\node-gyp\lib\configure.js:483:19)
        gyp ERR! stack     at PythonFinder.<anonymous>
        (C:\Users\guill\myApp\node_modules\node-gyp\lib\configure.js:508:16)
        gyp ERR! stack     at C:\Users\guill\myApp\node_modules\graceful-fs\polyfills.js:284:29
        gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:166:21)
        gyp ERR! System Windows_NT 10.0.15063
        gyp ERR! command "C:\\Program Files\\nodejs\\node.exe"
        "C:\\Users\\guill\\myApp\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext="
        "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
        gyp ERR! cwd C:\Users\guill\myApp\node_modules\node-sass
        gyp ERR! node -v v9.0.0
        gyp ERR! node-gyp -v v3.6.2
        gyp ERR! not ok
        Build failed with error code: 1
        npm WARN Error: EPERM: operation not permitted, scandir
        'C:\Users\guill\myApp\node_modules\fsevents\node_modules'
        npm WARN  { Error: EPERM: operation not permitted, scandir
        'C:\Users\guill\myApp\node_modules\fsevents\node_modules'
        npm WARN   stack: 'Error: EPERM: operation not permitted, scandir
        \'C:\\Users\\guill\\myApp\\node_modules\\fsevents\\node_modules\'',
        npm WARN   errno: -4048,
        npm WARN   code: 'EPERM',
        npm WARN   syscall: 'scandir',
        npm WARN   path: 'C:\\Users\\guill\\myApp\\node_modules\\fsevents\\node_modules' }
        npm ERR! code ELIFECYCLE
        npm ERR! errno 1
        npm ERR! node-sass@4.5.3 postinstall: `node scripts/build.js`
        npm ERR! Exit status 1
        npm ERR!
        npm ERR! Failed at the node-sass@4.5.3 postinstall script.
        npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

@ionic/cli-utils : 1.16.0
ionic (Ionic CLI) : 3.16.0

System:
Node : v9.0.0
npm : 5.5.1
OS : Windows 10

Ionic 3.16.0

Can you help me to find a solution ?

Thanks a lot !


#2

Hello,
I don’t know if this is your problem, but node 9.00 is the newest stuff. Maybe this cause problems.
I learned from this post --prod build not work, @ionic/app-scripts 3.0.0 broken that I would be a good idea to have the possiblity changing npm (node) version by nvm.

If https://ionicframework.com/docs/cli/ is “actual”?, then node 6 LTS should used.

Best regards, anna-liebt.


#3

Thanks a lot, I solve the problem by changing this line in my package.json “@ionic/app-scripts”: “1.3.12”, and then npm install and it worked ! Not sure why…