Npm install -- Throws be python error

[ShunmugamAiyappan]

E:\Projects\FrontEnd\Incentivio\isomorphic500\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:\Users\Shan-Aeturnum\AppData\Roaming\nvm\v6.11.2\node.exe', gyp verb cli 'E:\Projects\FrontEnd\Incentivio\isomorphic500\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 (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:13:12) gyp verb which failed at F (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:68:19) gyp verb which failed at E (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:80:29) gyp verb which failed at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:89:16 gyp verb which failed at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\isexe\index.js:42:5 gyp verb which failed at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\isexe\windows.js:36:5 gyp verb which failed at FSReqWrap.oncomplete (fs.js:123:15) gyp verb which failed python2 { Error: not found: python2 gyp verb which failed at getNotFoundError (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:13:12) gyp verb which failed at F (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:68:19) gyp verb which failed at E (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:80:29) gyp verb which failed at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:89:16 gyp verb which failed at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\isexe\index.js:42:5 gyp verb which failed at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\isexe\windows.js:36:5 gyp verb which failed at FSReqWrap.oncomplete (fs.js:123:15) gyp verb which failed stack: 'Error: not found: python2\n at getNotFoundError (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:13:12)\n at F (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:68:19)\n at E (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:80:29)\n at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:89:16\n at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\isexe\index.js:42:5\n at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\isexe\windows.js:36:5\n at FSReqWrap.oncomplete (fs.js:123:15)', 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 (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:13:12) gyp verb which failed at F (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:68:19) gyp verb which failed at E (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:80:29) gyp verb which failed at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:89:16 gyp verb which failed at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\isexe\index.js:42:5 gyp verb which failed at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\isexe\windows.js:36:5 gyp verb which failed at FSReqWrap.oncomplete (fs.js:123:15) gyp verb which failed python { Error: not found: python gyp verb which failed at getNotFoundError (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:13:12) gyp verb which failed at F (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:68:19) gyp verb which failed at E (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:80:29) gyp verb which failed at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:89:16 gyp verb which failed at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\isexe\index.js:42:5 gyp verb which failed at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\isexe\windows.js:36:5 gyp verb which failed at FSReqWrap.oncomplete (fs.js:123:15) gyp verb which failed stack: 'Error: not found: python\n at getNotFoundError (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:13:12)\n at F (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:68:19)\n at E (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:80:29)\n at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\which\which.js:89:16\n at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\isexe\index.js:42:5\n at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\isexe\windows.js:36:5\n at FSReqWrap.oncomplete (fs.js:123:15)', 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 Object.failNoPython (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\node-gyp\lib\configure.js:483:19) gyp ERR! stack at Object. (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\node-gyp\lib\configure.js:508:16) gyp ERR! stack at E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\graceful-fs\polyfills.js:284:29 gyp ERR! stack at FSReqWrap.oncomplete (fs.js:123:15) gyp ERR! System Windows_NT 10.0.14393 gyp ERR! command "C:\Users\Shan-Aeturnum\AppData\Roaming\nvm\v6.11.2\node.exe" "E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\node-gyp\bin\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library=" gyp ERR! cwd E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\node-sass gyp ERR! node -v v6.11.2 gyp ERR! node-gyp -v v3.6.2 gyp ERR! not ok Build failed npm WARN Error: EPERM: operation not permitted, scandir 'E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\fsevents\node_modules\dashdash\node_modules' npm WARN at Error (native) npm WARN { Error: EPERM: operation not permitted, scandir 'E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\fsevents\node_modules\dashdash\node_modules' npm WARN at Error (native) npm WARN stack: 'Error: EPERM: operation not permitted, scandir 'E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\fsevents\node_modules\dashdash\node_modules'\n at Error (native)', npm WARN errno: -4048, npm WARN code: 'EPERM', npm WARN syscall: 'scandir', npm WARN path: 'E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\fsevents\node_modules\dashdash\node_modules' } 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.

[ShunmugamAiyappan]

I have change the node-sass version, now its working

[ShunmugamAiyappan]

Failed to set error notification. E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\webpack-dev-server\lib\Server.js:29 const validationErrors = webpack.validateSchema(optionsSchema, options); ^

TypeError: webpack.validateSchema is not a function at new Server (E:\Projects\FrontEnd\Incentivio\isomorphic500\node_modules\webpack-dev-server\lib\Server.js:29:35) at exports.default (E:/Projects/FrontEnd/Incentivio/isomorphic500/webpack/server.js:24:28) at E:\Projects\FrontEnd\Incentivio\isomorphic500\index.js:16:32 at Server. (E:/Projects/FrontEnd/Incentivio/isomorphic500/src/server.js:81:50) at Server.g (events.js:292:16) at emitNone (events.js:86:13) at Server.emit (events.js:185:7) at emitListeningNT (net.js:1284:10) at _combinedTickCallback (internal/process/next_tick.js:77:11) at process._tickCallback (internal/process/next_tick.js:104:9) 31 Aug 10:04:21 - [nodemon] app crashed - waiting for file changes before starting...