Ionic-framework: Failed to start - node-sass

[matheusrufca]

I'm getting this error on start command ionic start app tabs`:

npm -v 5.0.3
node -v v8.0.0
ionic -v 3.3.0
node-sass 4.5.3
libsass 3.5.0.beta.2

[ERROR] An error occurred while running npm install (exit code 1):

npm WARN deprecated [email protected]: Please update to the latest object-keys
npm WARN prefer global [email protected] should be installed with -g

[email protected] install D:webappnode_modulesnode-sass
node scripts/install.js

Downloading binary from https://github.com/sass/node-sass/releases/download/v4.5.0/win32-x64-57_binding.node
Cannot download "https://github.com/sass/node-sass/releases/download/v4.5.0/win32-x64-57_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

[email protected] install D:webappnode_modulesfsevents
node install

[email protected] postinstall D:webappnode_modulesnode-sass
node scripts/build.js

Building: E:Program Filesnodejsnode.exe D:webappnode_modulesnode-gypbinnode-gyp.js rebuild --verbose --libsas_ext= --libsass_cflags= --libsass_ldflags= --libsass_library=
gyp info it worked if it ends with ok
gyp verb cli [ 'E:\Program Files\nodejs\node.exe',
gyp verb cli 'D:\web\app\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 [email protected]
gyp info using [email protected] | 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 (D:webappnode_moduleswhichwhich.js:13:12)
gyp verb which failed at F (D:webappnode_moduleswhichwhich.js:68:19)
gyp verb which failed at E (D:webappnode_moduleswhichwhich.js:80:29)
gyp verb which failed at D:webappnode_moduleswhichwhich.js:89:16
gyp verb which failed at D:webappnode_modulesisexeindex.js:42:5
gyp verb which failed at D:webappnode_modulesisexewindows.js:36:5
gyp verb which failed at FSReqWrap.oncomplete (fs.js:152:21)
gyp verb which failed python2 { Error: not found: python2
gyp verb which failed at getNotFoundError (D:webappnode_moduleswhichwhich.js:13:12)
gyp verb which failed at F (D:webappnode_moduleswhichwhich.js:68:19)
gyp verb which failed at E (D:webappnode_moduleswhichwhich.js:80:29)
gyp verb which failed at D:webappnode_moduleswhichwhich.js:89:16
gyp verb which failed at D:webappnode_modulesisexeindex.js:42:5
gyp verb which failed at D:webappnode_modulesisexewindows.js:36:5
gyp verb which failed at FSReqWrap.oncomplete (fs.js:152:21) 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 (D:webappnode_moduleswhichwhich.js:13:12)
gyp verb which failed at F (D:webappnode_moduleswhichwhich.js:68:19)
gyp verb which failed at E (D:webappnode_moduleswhichwhich.js:80:29)
gyp verb which failed at D:webappnode_moduleswhichwhich.js:89:16
gyp verb which failed at D:webappnode_modulesisexeindex.js:42:5
gyp verb which failed at D:webappnode_modulesisexewindows.js:36:5
gyp verb which failed at FSReqWrap.oncomplete (fs.js:152:21)
gyp verb which failed python { Error: not found: python
gyp verb which failed at getNotFoundError (D:webappnode_moduleswhichwhich.js:13:12)
gyp verb which failed at F (D:webappnode_moduleswhichwhich.js:68:19)
gyp verb which failed at E (D:webappnode_moduleswhichwhich.js:80:29)
gyp verb which failed at D:webappnode_moduleswhichwhich.js:89:16
gyp verb which failed at D:webappnode_modulesisexeindex.js:42:5
gyp verb which failed at D:webappnode_modulesisexewindows.js:36:5
gyp verb which failed at FSReqWrap.oncomplete (fs.js:152:21) 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:Python27python.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 (D:webappnode_modulesnode-gyplibconfigure.js:483:19)
gyp ERR! stack at PythonFinder. (D:webappnode_modulesnode-gyplibconfigure.js:508:16)
gyp ERR! stack at D:webappnode_modulesgraceful-fspolyfills.js:284:29
gyp ERR! stack at FSReqWrap.oncomplete (fs.js:152:21)
gyp ERR! System Windows_NT 10.0.15063
gyp ERR! command "E:\Program Files\nodejs\node.exe" "D:\web\app\node_modules\node-gyp\bin\node-gyp.js" "rebuld" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd D:webappnode_modulesnode-sass
gyp ERR! node -v v8.0.0
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok
Build failed with error code: 1
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] postinstall: node scripts/build.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] postinstall 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! C:UsersXXXAppDataRoamingnpm-cache_logs2017-06-07T01_10_22_416Z-debug.log
debug-log.txt

[anandraj9497]

I am also facing the same issue

[danielsogl]

Downgrade back to Node 6.10.3 and npm >=5. Ionic is not npm5 ready

[anandraj9497]

Let me try that and will update you

[danielsogl]

Trust me, that is the problem ;) I already fixed the outdated dependencies in the ionic-app-scripts repo. Wait for the next release and you will be able to use NPM 5 and ionic

[anandraj9497]

Now I have
node : 6.10.3
npm : 5.0.2
ionic/cli-utils : 1.3.0
Ionic CLI : 3.3.0

@danielsogl Thanks for the valuable info .
It solved my problem .

Thanks and Regards.
Anand Raj

[danielsogl]

You still run NPM >= 5! Downgrade to npm 4 or 3 by running npm install -g [email protected].
Then remove your node_modules folder and run npm install again.

[fidoafif]

@danielsogl have u test your app on android 4.2 API 17? I tested and its give me a blank screen but on android 5.0 its work fine, do you know why? please tell me,

[danielsogl]

@fidoafif please open a new issue. This has nothing to do with this issue thread.

[jgw96]

Hello all! Closing this issue as it seems to have been fixed. Thanks, @danielsogl!

[kwstoikonomou]

it has been 4 months. Is ionic npm >= 5 ready yet?

[kensodemann]

@kwstoikonomou - can you post exactly the command you are using and what you are seeing? Also, some information about your environment might prove helpful.

I tried the ionic start app tabs that the OP tried an it worked just fine. Here is my environment:

C:\Users\ken\Projects\Issues\app>ionic info

cli packages: (C:\Users\ken\AppData\Roaming\npm\node_modules)

    @ionic/cli-utils  : 1.14.0
    ionic (Ionic CLI) : 3.14.0

local packages:

    @ionic/app-scripts : 3.0.1
    Ionic Framework    : ionic-angular 3.7.1

System:

    Node : v8.7.0
    npm  : 5.4.2
    OS   : Windows 10

Misc:

    backend : pro

[MadAztec]

Hi guys,

I get a very similar error:
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"

My Ionic info is:
@ionic/cli-utils : 1.19.0
ionic (Ionic CLI) : 3.19.0
local packages:
@ionic/app-scripts : 1.1.4
Ionic Framework : ionic-angular 2.2.0
System:
Node : v9.2.0
npm : 5.5.1
OS : Windows 8
Misc:
backend : pro

I installed node-sass globally but it got version 4.7.2, but "ionic start..." is trying to use 4.5.3.
Looking into node-sass repository version 4.5.3 does NOT support win32-x64-59 while version 4.7.2 does support that environment (or at least it is listed there).

Do you any suggestions of what should i do to solve the problem?

Regards,
Arturo

[jawad-aziz-farhad]

Thanks @danielsogl. you saved my Day. 👍

[keitaassane1]

Thanks @danielsogl. you saved my Day. +1

[SatishMHiremath]

I have faced and fixed this issue relates node-sass and python error.Try installing latest angular cli command with the steps below

Set the system variable path as well:
C:UserswindowsusernameAppDataRoamingnpm

C:UserswindowsusernameAppDataRoamingnpmnode_modules@angularclibin;

C:Program Filesnodejs;

Then start using angular cli command prompt using:
angular client project folder path>npm install -g @latest

angular client project folder path>npm install -g node-gyp

[luiz-claudio]

solucion of the problem:
return the node for version 7.10.1
sudo npm cache clean -f
sudo npm install -g n
sudo n 7.10.1

[ionitron-bot[bot]]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.