An error occurred while running subprocess npm in ionic 3

Hello everyone,
why when I run ionic start myApp blank --type=ionic-angular I get these errors:
npm ERR! code 1
npm ERR! path C:\Users\saad.saeed\helloWorld\node_modules\node-sass
npm ERR! command failed
npm ERR! command C:\Windows\system32\cmd.exe /d /s /c node scripts/build.js
npm ERR! Building: C:\Program Files\nodejs\node.exe C:\Users\saad.saeed\helloWorld\node_modules\node-gyp\bin\node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_ldflags= --libsass_library=
npm ERR! gyp info it worked if it ends with ok
npm ERR! gyp verb cli [
npm ERR! gyp verb cli ‘C:\Program Files\nodejs\node.exe’,
npm ERR! gyp verb cli ‘C:\Users\saad.saeed\helloWorld\node_modules\node-gyp\bin\node-gyp.js’,
npm ERR! gyp verb cli ‘rebuild’,
npm ERR! gyp verb cli ‘–verbose’,
npm ERR! gyp verb cli ‘–libsass_ext=’,
npm ERR! gyp verb cli ‘–libsass_cflags=’,
npm ERR! gyp verb cli ‘–libsass_ldflags=’,
npm ERR! gyp verb cli ‘–libsass_library=’
npm ERR! gyp verb cli ]
npm ERR! gyp info using node-gyp@3.8.0
npm ERR! gyp info using node@16.13.0 | win32 | x64
npm ERR! gyp verb command rebuild
npm ERR! gyp verb command clean
npm ERR! gyp verb clean removing “build” directory
npm ERR! gyp verb command configure
npm ERR! gyp verb check python checking for Python executable “python2” in the PATH
npm ERR! gyp verb which failed Error: not found: python2
npm ERR! gyp verb which failed at getNotFoundError (C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:13:12)
npm ERR! gyp verb which failed at F (C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:68:19)
npm ERR! gyp verb which failed at E (C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:80:29)
npm ERR! gyp verb which failed at C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:89:16
npm ERR! gyp verb which failed at C:\Users\saad.saeed\helloWorld\node_modules\isexe\index.js:42:5
npm ERR! gyp verb which failed at C:\Users\saad.saeed\helloWorld\node_modules\isexe\windows.js:36:5
npm ERR! gyp verb which failed at FSReqCallback.oncomplete (node:fs:198:21)
npm ERR! gyp verb which failed python2 Error: not found: python2
npm ERR! gyp verb which failed at getNotFoundError (C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:13:12)
npm ERR! gyp verb which failed at F (C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:68:19)
npm ERR! gyp verb which failed at E (C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:80:29)
npm ERR! gyp verb which failed at C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:89:16
npm ERR! gyp verb which failed at C:\Users\saad.saeed\helloWorld\node_modules\isexe\index.js:42:5
npm ERR! gyp verb which failed at C:\Users\saad.saeed\helloWorld\node_modules\isexe\windows.js:36:5
npm ERR! gyp verb which failed at FSReqCallback.oncomplete (node:fs:198:21) {
npm ERR! gyp verb which failed code: ‘ENOENT’
npm ERR! gyp verb which failed }
npm ERR! gyp verb check python checking for Python executable “python” in the PATH
npm ERR! gyp verb which failed Error: not found: python
npm ERR! gyp verb which failed at getNotFoundError (C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:13:12)
npm ERR! gyp verb which failed at F (C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:68:19)
npm ERR! gyp verb which failed at E (C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:80:29)
npm ERR! gyp verb which failed at C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:89:16
npm ERR! gyp verb which failed at C:\Users\saad.saeed\helloWorld\node_modules\isexe\index.js:42:5
npm ERR! gyp verb which failed at C:\Users\saad.saeed\helloWorld\node_modules\isexe\windows.js:36:5
npm ERR! gyp verb which failed at FSReqCallback.oncomplete (node:fs:198:21)
npm ERR! gyp verb which failed python Error: not found: python
npm ERR! gyp verb which failed at getNotFoundError (C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:13:12)
npm ERR! gyp verb which failed at F (C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:68:19)
npm ERR! gyp verb which failed at E (C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:80:29)
npm ERR! gyp verb which failed at C:\Users\saad.saeed\helloWorld\node_modules\which\which.js:89:16
npm ERR! gyp verb which failed at C:\Users\saad.saeed\helloWorld\node_modules\isexe\index.js:42:5
npm ERR! gyp verb which failed at C:\Users\saad.saeed\helloWorld\node_modules\isexe\windows.js:36:5
npm ERR! gyp verb which failed at FSReqCallback.oncomplete (node:fs:198:21) {
npm ERR! gyp verb which failed code: ‘ENOENT’
npm ERR! gyp verb which failed }
npm ERR! gyp verb could not find “python”. checking python launcher
npm ERR! gyp verb could not find “python”. guessing location
npm ERR! gyp verb ensuring that file exists: C:\Python27\python.exe
npm ERR! gyp ERR! configure error
npm ERR! gyp ERR! stack Error: Can’t find Python executable “python”, you can set the PYTHON env variable.
npm ERR! gyp ERR! stack at PythonFinder.failNoPython (C:\Users\saad.saeed\helloWorld\node_modules\node-gyp\lib\configure.js:484:19)
npm ERR! gyp ERR! stack at PythonFinder. (C:\Users\saad.saeed\helloWorld\node_modules\node-gyp\lib\configure.js:509:16)
npm ERR! gyp ERR! stack at callback (C:\Users\saad.saeed\helloWorld\node_modules\graceful-fs\polyfills.js:299:20)
npm ERR! gyp ERR! stack at FSReqCallback.oncomplete (node:fs:198:21)
npm ERR! gyp ERR! System Windows_NT 10.0.19041
npm ERR! gyp ERR! command “C:\Program Files\nodejs\node.exe” “C:\Users\saad.saeed\helloWorld\node_modules\node-gyp\bin\node-gyp.js” “rebuild” “–verbose” “–libsass_ext=” “–libsass_cflags=” “–libsass_ldflags=” “–libsass_library=”
npm ERR! gyp ERR! cwd C:\Users\saad.saeed\helloWorld\node_modules\node-sass
npm ERR! gyp ERR! node -v v16.13.0
npm ERR! gyp ERR! node-gyp -v v3.8.0
npm ERR! gyp ERR! not ok
npm ERR! Build failed with error code: 1

npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\saad.saeed\AppData\Local\npm-cache_logs\2021-11-12T14_02_15_524Z-debug.log
[ERROR] An error occurred while running subprocess npm.

    npm.cmd i exited with exit code 1.

    Re-running this command with the --verbose flag may provide more information.

can anyone help me

my npm version 8.1.0 and node version v16.13.0
guys its urgent