I tried it today and this is what I got

$ npm install --save-dev gulp

node-sass@4.13.0 install D:\MyPhotoProject2020\MDB-Pro\node_modules\node-sass node scripts/install.js

Downloading binary from https://github.com/sass/node-sass/releases/download/v4.13.0/win32-x64-83_binding.node Cannot download "https://github.com/sass/node-sass/releases/download/v4.13.0/win32-x64-83_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

core-js@2.6.10 postinstall D:\MyPhotoProject2020\MDB-Pro\node_modules\@babel\polyfill\node_modules\core-js node postinstall || echo "ignore"

Thank you for using core-js ( https://github.com/zloirock/core-js ) for polyfilling JavaScript standard library!

The project needs your help! Please consider supporting of core-js on Open Collective or Patreon:

https://opencollective.com/core-js https://www.patreon.com/zloirock

Also, the author of core-js ( https://github.com/zloirock ) is looking for a good job -)

node-sass@4.13.0 postinstall D:\MyPhotoProject2020\MDB-Pro\node_modules\node-sass node scripts/build.js

Building: C:\Program Files\nodejs\node.exe D:\MyPhotoProject2020\MDB-Pro\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:\MyPhotoProject2020\MDB-Pro\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@3.8.0 gyp info using node@14.8.0 | 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:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:13:12) gyp verb which failed at F (D:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:68:19) gyp verb which failed at E (D:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:80:29) gyp verb which failed at D:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:89:16 gyp verb which failed at D:\MyPhotoProject2020\MDB-Pro\node_modules\isexe\index.js:42:5 gyp verb which failed at D:\MyPhotoProject2020\MDB-Pro\node_modules\isexe\windows.js:36:5 gyp verb which failed at FSReqCallback.oncomplete (fs.js:176:21) gyp verb which failed python2 Error: not found: python2 gyp verb which failed at getNotFoundError (D:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:13:12) gyp verb which failed at F (D:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:68:19) gyp verb which failed at E (D:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:80:29) gyp verb which failed at D:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:89:16 gyp verb which failed at D:\MyPhotoProject2020\MDB-Pro\node_modules\isexe\index.js:42:5 gyp verb which failed at D:\MyPhotoProject2020\MDB-Pro\node_modules\isexe\windows.js:36:5 gyp verb which failed at FSReqCallback.oncomplete (fs.js:176:21) { 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:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:13:12) gyp verb which failed at F (D:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:68:19) gyp verb which failed at E (D:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:80:29) gyp verb which failed at D:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:89:16 gyp verb which failed at D:\MyPhotoProject2020\MDB-Pro\node_modules\isexe\index.js:42:5 gyp verb which failed at D:\MyPhotoProject2020\MDB-Pro\node_modules\isexe\windows.js:36:5 gyp verb which failed at FSReqCallback.oncomplete (fs.js:176:21) gyp verb which failed python Error: not found: python gyp verb which failed at getNotFoundError (D:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:13:12) gyp verb which failed at F (D:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:68:19) gyp verb which failed at E (D:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:80:29) gyp verb which failed at D:\MyPhotoProject2020\MDB-Pro\node_modules\which\which.js:89:16 gyp verb which failed at D:\MyPhotoProject2020\MDB-Pro\node_modules\isexe\index.js:42:5 gyp verb which failed at D:\MyPhotoProject2020\MDB-Pro\node_modules\isexe\windows.js:36:5 gyp verb which failed at FSReqCallback.oncomplete (fs.js:176:21) { 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 PythonFinder.failNoPython (D:\MyPhotoProject2020\MDB-Pro\node_modules\node-gyp\lib\configure.js:484:19) gyp ERR! stack at PythonFinder. (D:\MyPhotoProject2020\MDB-Pro\node_modules\node-gyp\lib\configure.js:509:16) gyp ERR! stack at callback (D:\MyPhotoProject2020\MDB-Pro\node_modules\graceful-fs\polyfills.js:295:20) gyp ERR! stack at FSReqCallback.oncomplete (fs.js:176:21) gyp ERR! System Windows_NT 10.0.19042 gyp ERR! command "C:\Program Files\nodejs\node.exe" "D:\MyPhotoProject2020\MDB-Pro\node_modules\node-gyp\bin\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library=" gyp ERR! cwd D:\MyPhotoProject2020\MDB-Pro\node_modules\node-sass gyp ERR! node -v v14.8.0 gyp ERR! node-gyp -v v3.8.0 gyp ERR! not ok Build failed with error code: 1 npm WARN myproject@4.19.1 No description npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.9 (node_modules\fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.9: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! node-sass@4.13.0 postinstall: node scripts/build.js npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the node-sass@4.13.0 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\rabin\AppData\Roaming\npm-cache_logs\2020-08-23T02_50_14_069Z-debug.log

rabin@DESKTOP-G1BLJA5 MINGW64 /d/MyPhotoProject2020/MDB-Pro $ npm install --save-dev gulp-sass gulp-autoprefixer gulp-cssmin browser-sync gulp-concat gulp-minify gulp-rename gulp-imagemin npm WARN deprecated gulp-util@2.2.20: gulp-util is deprecated - replace it, following the guidelines at https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5 npm WARN deprecated graceful-fs@2.0.3: please upgrade to graceful-fs 4 for compatibility with current and future versions of Node.js npm WARN deprecated request@2.88.2: request has been deprecated, see https://github.com/request/request/issues/3142 npm WARN deprecated har-validator@5.1.5: this library is no longer supported npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@~2.1.2 (node_modules\browser-sync\node_modules\chokidar\node_modules\fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@2.1.3: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"}) npm WARN myproject@4.19.1 No description

npm ERR! code EINVAL npm ERR! EINVAL: invalid argument, read

npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\rabin\AppData\Roaming\npm-cache_logs\2020-08-23T03_12_44_128Z-debug.log