ionic-framework: Failed to start - node-sass

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 object-keys@0.2.0: Please update to the latest object-keys npm WARN prefer global node-gyp@3.6.2 should be installed with -g

node-sass@4.5.0 install D:\web\app\node_modules\node-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

fsevents@1.1.1 install D:\web\app\node_modules\fsevents node install

node-sass@4.5.0 postinstall D:\web\app\node_modules\node-sass node scripts/build.js

Building: E:\Program Files\nodejs\node.exe D:\web\app\node_modules\node-gyp\bin\node-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 node-gyp@3.6.2 gyp info using node@8.0.0 | 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 (D:\web\app\node_modules\which\which.js:13:12) gyp verb which failed at F (D:\web\app\node_modules\which\which.js:68:19) gyp verb which failed at E (D:\web\app\node_modules\which\which.js:80:29) gyp verb which failed at D:\web\app\node_modules\which\which.js:89:16 gyp verb which failed at D:\web\app\node_modules\isexe\index.js:42:5 gyp verb which failed at D:\web\app\node_modules\isexe\windows.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:\web\app\node_modules\which\which.js:13:12) gyp verb which failed at F (D:\web\app\node_modules\which\which.js:68:19) gyp verb which failed at E (D:\web\app\node_modules\which\which.js:80:29) gyp verb which failed at D:\web\app\node_modules\which\which.js:89:16 gyp verb which failed at D:\web\app\node_modules\isexe\index.js:42:5 gyp verb which failed at D:\web\app\node_modules\isexe\windows.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:\web\app\node_modules\which\which.js:13:12) gyp verb which failed at F (D:\web\app\node_modules\which\which.js:68:19) gyp verb which failed at E (D:\web\app\node_modules\which\which.js:80:29) gyp verb which failed at D:\web\app\node_modules\which\which.js:89:16 gyp verb which failed at D:\web\app\node_modules\isexe\index.js:42:5 gyp verb which failed at D:\web\app\node_modules\isexe\windows.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:\web\app\node_modules\which\which.js:13:12) gyp verb which failed at F (D:\web\app\node_modules\which\which.js:68:19) gyp verb which failed at E (D:\web\app\node_modules\which\which.js:80:29) gyp verb which failed at D:\web\app\node_modules\which\which.js:89:16 gyp verb which failed at D:\web\app\node_modules\isexe\index.js:42:5 gyp verb which failed at D:\web\app\node_modules\isexe\windows.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:\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 (D:\web\app\node_modules\node-gyp\lib\configure.js:483:19) gyp ERR! stack at PythonFinder.<anonymous> (D:\web\app\node_modules\node-gyp\lib\configure.js:508:16) gyp ERR! stack at D:\web\app\node_modules\graceful-fs\polyfills.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:\web\app\node_modules\node-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! node-sass@4.5.0 postinstall: node scripts/build.js npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the node-sass@4.5.0 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:\Users\XXX\AppData\Roaming\npm-cache_logs\2017-06-07T01_10_22_416Z-debug.log debug-log.txt