# Error with starting App on Ionic **URL:** \ **Category:** ionic-v3\ **Created:** [January 6, 2018, 9:01am UTC](https://forum.ionicframework.com/t/error-with-starting-app-on-ionic/117403 "2018-01-06T09:01:30Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Sapphire317](https://avatars.discourse-cdn.com/v4/letter/s/a698b9/32.png) [@Sapphire317](https://forum.ionicframework.com/u/Sapphire317)\ **Post date:** [January 6, 2018, 9:01am UTC](https://forum.ionicframework.com/t/error-with-starting-app-on-ionic/117403/1 "2018-01-06T09:01:30Z")
OS: Windows10 (x64) Node js Version: 9.3.0 Ionic Version:3.19.0 I followed guideline on Ionic homepage step by step. But the error occurs when I try to start new Ionic Apps. I repeated deleting and re-installing so many times, but same result. what am I supposed to do? These are commands that I entered. ``` npm install -g cordova ionic ionic start myApp tabs ``` And These are errors after that. × Running command - failed! [ERROR] An error occurred while running npm i (exit code 1): ``` > node-sass@4.5.3 install C:\Users\sdw90\Desktop\Hybrid App\Ionic\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\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\uglifyjs-webpack-plugin > node lib/post_install.js > node-sass@4.5.3 postinstall C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\node-sass > node scripts/build.js Building: C:\Program Files\nodejs\node.exe C:\Users\sdw90\Desktop\Hybrid App\Ionic\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\\sdw90\\Desktop\\Hybrid App\\Ionic\\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@9.3.0 | 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\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:13:12) gyp verb `which` failed at F (C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:68:19) gyp verb `which` failed at E (C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:80:29) gyp verb `which` failed at C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:89:16 gyp verb `which` failed at C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\isexe\index.js:42:5 gyp verb `which` failed at C:\Users\sdw90\Desktop\Hybrid App\Ionic\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\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:13:12) gyp verb `which` failed at F (C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:68:19) gyp verb `which` failed at E (C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:80:29) gyp verb `which` failed at C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:89:16 gyp verb `which` failed at C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\isexe\index.js:42:5 gyp verb `which` failed at C:\Users\sdw90\Desktop\Hybrid App\Ionic\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\\sdw90\\Desktop\\Hybrid App\\Ionic\\MyApp\\node_modules\\which\\which.js:13:12)\n at F (C:\\Users\\sdw90\\Desktop\\Hybrid App\\Ionic\\MyApp\\node_modules\\which\\which.js:68:19)\n at E (C:\\Users\\sdw90\\Desktop\\Hybrid App\\Ionic\\MyApp\\node_modules\\which\\which.js:80:29)\n at C:\\Users\\sdw90\\Desktop\\Hybrid App\\Ionic\\MyApp\\node_modules\\which\\which.js:89:16\n at C:\\Users\\sdw90\\Desktop\\Hybrid App\\Ionic\\MyApp\\node_modules\\isexe\\index.js:42:5\n at C:\\Users\\sdw90\\Desktop\\Hybrid App\\Ionic\\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\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:13:12) gyp verb `which` failed at F (C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:68:19) gyp verb `which` failed at E (C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:80:29) gyp verb `which` failed at C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:89:16 gyp verb `which` failed at C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\isexe\index.js:42:5 gyp verb `which` failed at C:\Users\sdw90\Desktop\Hybrid App\Ionic\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\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:13:12) gyp verb `which` failed at F (C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:68:19) gyp verb `which` failed at E (C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:80:29) gyp verb `which` failed at C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\which\which.js:89:16 gyp verb `which` failed at C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\isexe\index.js:42:5 gyp verb `which` failed at C:\Users\sdw90\Desktop\Hybrid App\Ionic\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\\sdw90\\Desktop\\Hybrid App\\Ionic\\MyApp\\node_modules\\which\\which.js:13:12)\n at F (C:\\Users\\sdw90\\Desktop\\Hybrid App\\Ionic\\MyApp\\node_modules\\which\\which.js:68:19)\n at E (C:\\Users\\sdw90\\Desktop\\Hybrid App\\Ionic\\MyApp\\node_modules\\which\\which.js:80:29)\n at C:\\Users\\sdw90\\Desktop\\Hybrid App\\Ionic\\MyApp\\node_modules\\which\\which.js:89:16\n at C:\\Users\\sdw90\\Desktop\\Hybrid App\\Ionic\\MyApp\\node_modules\\isexe\\index.js:42:5\n at C:\\Users\\sdw90\\Desktop\\Hybrid App\\Ionic\\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\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\node-gyp\lib\configure.js:483:19) gyp ERR! stack at PythonFinder. (C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\node-gyp\lib\configure.js:508:16) gyp ERR! stack at C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\graceful-fs\polyfills.js:284:29 gyp ERR! stack at FSReqWrap.oncomplete (fs.js:166:21) gyp ERR! System Windows_NT 10.0.16299 gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\sdw90\\Desktop\\Hybrid App\\Ionic\\MyApp\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library=" gyp ERR! cwd C:\Users\sdw90\Desktop\Hybrid App\Ionic\MyApp\node_modules\node-sass gyp ERR! node -v v9.3.0 gyp ERR! node-gyp -v v3.6.2 gyp ERR! not ok Build failed with error code: 1 npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.1.3 (node_modules\fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.1.3: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"}) 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. npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\sdw90\AppData\Roaming\npm-cache\_logs\2018-01-06T08_57_38_638Z-debug.log ``` ---
**Author:** ![reinerluke97](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/reinerluke97/32/129426_2.png) [@reinerluke97](https://forum.ionicframework.com/u/reinerluke97)\ **Post date:** [January 6, 2018, 10:04am UTC](https://forum.ionicframework.com/t/error-with-starting-app-on-ionic/117403/2 "2018-01-06T10:04:15Z")
Had same weird issues with **Node js Version: 9.3.0.** My Solution was to **downgrade to** an older Version. In my Case im Using **7.0.0** now. If you wonder how you can downgrade on Windows. Go to **Programs and Features** and **uninstall it** like any other Program (DONT USE THE NODE UINSTALLER). After that restart your PC and Node should be deleted and then you can **download the 7.0.0**. Version here (go for the **msi file** ): [https://nodejs.org/download/release/v7.0.0/](https://nodejs.org/download/release/v7.0.0/) ---
**Author:** ![Sapphire317](https://avatars.discourse-cdn.com/v4/letter/s/a698b9/32.png) [@Sapphire317](https://forum.ionicframework.com/u/Sapphire317)\ **Post date:** [January 6, 2018, 11:48am UTC](https://forum.ionicframework.com/t/error-with-starting-app-on-ionic/117403/4 "2018-01-06T11:48:33Z")
Oh, I really appreciate it…! I stayed all night because of this problem… I wonder why the latest version doesn’t work at all. Anyway, thanks again! ---
**Author:** ![reinerluke97](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/reinerluke97/32/129426_2.png) [@reinerluke97](https://forum.ionicframework.com/u/reinerluke97)\ **Post date:** [January 6, 2018, 12:11pm UTC](https://forum.ionicframework.com/t/error-with-starting-app-on-ionic/117403/5 "2018-01-06T12:11:32Z")
If it worked please mark it as solution! Cheers 🙂 ---
**Author:** ![mhartington](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/mhartington/32/137757_2.png) [@mhartington](https://forum.ionicframework.com/u/mhartington)\ **Post date:** [July 19, 2021, 9:56pm UTC](https://forum.ionicframework.com/t/error-with-starting-app-on-ionic/117403/6 "2021-07-19T21:56:14Z")
Closed on July 19, 2021, 9:56pm UTC