error D:\Source\Courses\angular-pro-routing\node_modules\node-sass: Command failed.

[FloPadrone]

There seems to be a problem with sass on windows environments.

Here is my console output for yarn install:
D:\Source\Courses\angular-pro-routing>yarn install
yarn install v1.22.0
[1/4] Resolving packages...
[2/4] Fetching packages...
info fsevents@1.0.15: The platform "win32" is incompatible with this module.
info "fsevents@1.0.15" is an optional dependency and failed compatibility check. Excluding it from installation.
[3/4] Linking dependencies...
[4/4] Building fresh packages...
error D:\Source\Courses\angular-pro-routing\node_modules\node-sass: Command failed.
Exit code: 1
Command: node scripts/build.js
Arguments:
Directory: D:\Source\Courses\angular-pro-routing\node_modules\node-sass
Output:
Building: C:\Program Files\nodejs\node.exe D:\Source\Courses\angular-pro-routing\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 [
gyp verb cli 'C:\Program Files\nodejs\node.exe',
gyp verb cli 'D:\Source\Courses\angular-pro-routing\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 verb cli ]
gyp info using node-gyp@3.4.0
gyp info using node@12.13.1 | 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:\Source\Courses\angular-pro-routing\node_modules\which\which.js:13:12)
gyp verb which failed at F (D:\Source\Courses\angular-pro-routing\node_modules\which\which.js:68:19)
gyp verb which failed at E (D:\Source\Courses\angular-pro-routing\node_modules\which\which.js:80:29)
gyp verb which failed at D:\Source\Courses\angular-pro-routing\node_modules\which\which.js:89:16
gyp verb which failed at D:\Source\Courses\angular-pro-routing\node_modules\isexe\index.js:44:5
gyp verb which failed at D:\Source\Courses\angular-pro-routing\node_modules\isexe\windows.js:29:5
gyp verb which failed at FSReqCallback.oncomplete (fs.js:158:21)
gyp verb which failed python2 Error: not found: python2
gyp verb which failed at getNotFoundError (D:\Source\Courses\angular-pro-routing\node_modules\which\which.js:13:12)
gyp verb which failed at F (D:\Source\Courses\angular-pro-routing\node_modules\which\which.js:68:19)
gyp verb which failed at E (D:\Source\Courses\angular-pro-routing\node_modules\which\which.js:80:29)
gyp verb which failed at D:\Source\Courses\angular-pro-routing\node_modules\which\which.js:89:16
gyp verb which failed at D:\Source\Courses\angular-pro-routing\node_modules\isexe\index.js:44:5
gyp verb which failed at D:\Source\Courses\angular-pro-routing\node_modules\isexe\windows.js:29:5
gyp verb which failed at FSReqCallback.oncomplete (fs.js:158:21) {
gyp verb which failed code: 'ENOENT'
gyp verb which failed }
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:\Source\Courses\angular-pro-routing\node_modules\which\which.js:13:12)
gyp verb which failed at F (D:\Source\Courses\angular-pro-routing\node_modules\which\which.js:68:19)
gyp verb which failed at E (D:\Source\Courses\angular-pro-routing\node_modules\which\which.js:80:29)
gyp verb which failed at D:\Source\Courses\angular-pro-routing\node_modules\which\which.js:89:16
gyp verb which failed at D:\Source\Courses\angular-pro-routing\node_modules\isexe\index.js:44:5
gyp verb which failed at D:\Source\Courses\angular-pro-routing\node_modules\isexe\windows.js:29:5
gyp verb which failed at FSReqCallback.oncomplete (fs.js:158:21)
gyp verb which failed python Error: not found: python
gyp verb which failed at getNotFoundError (D:\Source\Courses\angular-pro-routing\node_modules\which\which.js:13:12)
gyp verb which failed at F (D:\Source\Courses\angular-pro-routing\node_modules\which\which.js:68:19)
gyp verb which failed at E (D:\Source\Courses\angular-pro-routing\node_modules\which\which.js:80:29)
gyp verb which failed at D:\Source\Courses\angular-pro-routing\node_modules\which\which.js:89:16
gyp verb which failed at D:\Source\Courses\angular-pro-routing\node_modules\isexe\index.js:44:5
gyp verb which failed at D:\Source\Courses\angular-pro-routing\node_modules\isexe\windows.js:29:5
gyp verb which failed at FSReqCallback.oncomplete (fs.js:158:21) {
gyp verb which failed code: 'ENOENT'
gyp verb which failed }
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 failNoPython (D:\Source\Courses\angular-pro-routing\node_modules\node-gyp\lib\configure.js:449:14)
gyp ERR! stack at D:\Source\Courses\angular-pro-routing\node_modules\node-gyp\lib\configure.js:404:11
gyp ERR! stack at D:\Source\Courses\angular-pro-routing\node_modules\graceful-fs\polyfills.js:284:29
gyp ERR! stack at FSReqCallback.oncomplete (fs.js:158:21)
gyp ERR! System Windows_NT 10.0.17763
gyp ERR! command "C:\Program Files\nodejs\node.exe" "D:\Source\Courses\angular-pro-routing\node_modules\node-gyp\bin\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd D:\Source\Courses\angular-pro-routing\node_modules\node-sass
gyp ERR! node -v v12.13.1
gyp ERR! node-gyp -v v3.4.0
gyp ERR! not ok
Build failed with error code: 1
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.

How can I fix this error?
PS: the code is directly checked out from github (47-route-tracing) nothing changed.

[norgemann]

Try running: npm install node-sass@latest