大家好，我有一个项目，它是离子的，当我打开项目并运行命令提示符并键入离子服务时，我遇到了错误，请帮助解决什么问题....谢谢
C:UsersSoftware EngineerDesktopApp code>ionic serve
> ionic-app-scripts serve --address localhost --port 8100 --
livereload-port 35729 --dev-logger-port 53703 --nobrowser
[app-scripts] 'ionic-app-scripts' is not recognized as an internal or
external command,
[app-scripts] operable program or batch file.
[INFO] Looks like @ionic/app-scripts isn't installed in this project.
This package is required for this command to work properly. The
package provides a CLI utility, but the
ionic-app-scripts binary was not found in your PATH.
? Install @ionic/app-scripts? No
[WARN] Not installing--here's how to install manually: npm i -D -E
@ionic/app-scripts
[ERROR] @ionic/app-scripts is required for this command to work
properly.
C:UsersSoftware EngineerDesktopApp code>ionic serve
> ionic-app-scripts serve --address localhost --port 8100 --
livereload-port 35729 --dev-logger-port 53703 --nobrowser
[app-scripts] 'ionic-app-scripts' is not recognized as an internal or
external command,
[app-scripts] operable program or batch file.
[INFO] Looks like @ionic/app-scripts isn't installed in this project.
此命令需要此包才能正常工作。这软件包提供了一个 CLI 实用程序，但ionic-app-scripts 二进制在您的 PATH 中找不到。
? Install @ionic/app-scripts? Yes
> npm.cmd i -D -E @ionic/app-scripts
npm WARN deprecated browserslist@2.11.3: Browserslist 2 could fail on
reading Browserslist >3.0 config used in other tools.
> node-sass@4.5.3 install C:UsersSoftware EngineerDesktopApp
codenode_modulesnode-sass
> node scripts/install.js
Downloading binary from https://github.com/sass/node-
sass/releases/download/v4.5.3/win32-x64-72_binding.node
Cannot download "https://github.com/sass/node-
sass/releases/download/v4.5.3/win32-x64-72_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:UsersSoftware
EngineerDesktopApp codenode_modulesuglifyjs-webpack-plugin
> node lib/post_install.js
> node-sass@4.5.3 postinstall C:UsersSoftware EngineerDesktopApp
codenode_modulesnode-sass
> node scripts/build.js
Building: C:Program Filesnodejsnode.exe C:UsersSoftware
EngineerDesktopApp codenode_modulesnode-gypbinnode-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 'C:\Users\Software Engineer\Desktop\App
code\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@12.6.0 | 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:UsersSoftware
EngineerDesktopApp codenode_moduleswhichwhich.js:13:12)
gyp verb `which` failed at F (C:UsersSoftware
EngineerDesktopApp codenode_moduleswhichwhich.js:68:19)
gyp verb `which` failed at E (C:UsersSoftware
EngineerDesktopApp codenode_moduleswhichwhich.js:80:29)
gyp verb `which` failed at C:UsersSoftware EngineerDesktopApp
codenode_moduleswhichwhich.js:89:16
gyp verb `which` failed at C:UsersSoftware EngineerDesktopApp
codenode_modulesisexeindex.js:42:5
gyp verb `which` failed at C:UsersSoftware
EngineerDesktopApp codenode_modulesisexewindows.js:36:5
gyp verb `which` failed at FSReqCallback.oncomplete
(fs.js:165:21)
gyp verb `which` failed python2 Error: not found: python2
gyp verb `which` failed at getNotFoundError (C:UsersSoftware
EngineerDesktopApp codenode_moduleswhichwhich.js:13:12)
gyp verb `which` failed at F (C:UsersSoftware
EngineerDesktopApp codenode_moduleswhichwhich.js:68:19)
gyp verb `which` failed at E (C:UsersSoftware
EngineerDesktopApp codenode_moduleswhichwhich.js:80:29)
gyp verb `which` failed at C:UsersSoftware EngineerDesktopApp
codenode_moduleswhichwhich.js:89:16
gyp verb `which` failed at C:UsersSoftware EngineerDesktopApp
codenode_modulesisexeindex.js:42:5
gyp verb `which` failed at C:UsersSoftware EngineerDesktopApp
codenode_modulesisexewindows.js:36:5
gyp verb `which` failed at FSReqCallback.oncomplete
(fs.js:165:21) {
gyp verb `which` failed stack: 'Error: not found: python2n' +
gyp verb `which` failed ' at getNotFoundError
(C:\Users\Software Engineer\Desktop\App
code\node_modules\which\which.js:13:12)n' +
gyp verb `which` failed ' at F (C:\Users\Software
Engineer\Desktop\App code\node_modules\which\which.js:68:19)n' +
gyp verb `which` failed ' at E (C:\Users\Software
Engineer\Desktop\App code\node_modules\which\which.js:80:29)n' +
gyp verb `which` failed ' at C:\Users\Software
Engineer\Desktop\App code\node_modules\which\which.js:89:16n' +
gyp verb `which` failed ' at C:\Users\Software
Engineer\Desktop\App code\node_modules\isexe\index.js:42:5n' +
gyp verb `which` failed ' at C:\Users\Software
Engineer\Desktop\App code\node_modules\isexe\windows.js:36:5n' +
gyp verb `which` failed ' at FSReqCallback.oncomplete
(fs.js:165:21)',
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 (C:UsersSoftware
EngineerDesktopApp codenode_moduleswhichwhich.js:13:12)
gyp verb `which` failed at F (C:UsersSoftware
EngineerDesktopApp codenode_moduleswhichwhich.js:68:19)
gyp verb `which` failed at E (C:UsersSoftware
EngineerDesktopApp codenode_moduleswhichwhich.js:80:29)
gyp verb `which` failed at C:UsersSoftware
EngineerDesktopApp codenode_moduleswhichwhich.js:89:16
gyp verb `which` failed at C:UsersSoftware
EngineerDesktopApp codenode_modulesisexeindex.js:42:5
gyp verb `which` failed at C:UsersSoftware
EngineerDesktopApp codenode_modulesisexewindows.js:36:5
gyp verb `which` failed at FSReqCallback.oncomplete
(fs.js:165:21)
gyp verb `which` failed python Error: not found: python
gyp verb `which` failed at getNotFoundError (C:UsersSoftware
EngineerDesktopApp codenode_moduleswhichwhich.js:13:12)
gyp verb `which` failed at F (C:UsersSoftware
EngineerDesktopApp codenode_moduleswhichwhich.js:68:19)
gyp verb `which` failed at E (C:UsersSoftware
EngineerDesktopApp codenode_moduleswhichwhich.js:80:29)
gyp verb `which` failed at C:UsersSoftware
EngineerDesktopApp codenode_moduleswhichwhich.js:89:16
gyp verb `which` failed at C:UsersSoftware
EngineerDesktopApp codenode_modulesisexeindex.js:42:5
gyp verb `which` failed at C:UsersSoftware
EngineerDesktopApp codenode_modulesisexewindows.js:36:5
gyp verb `which` failed at FSReqCallback.oncomplete
(fs.js:165:21) {
gyp verb `which` failed stack: 'Error: not found: pythonn' +
gyp verb `which` failed ' at getNotFoundError
(C:\Users\Software Engineer\Desktop\App
code\node_modules\which\which.js:13:12)n' +
gyp verb `which` failed ' at F (C:\Users\Software
Engineer\Desktop\App
code\node_modules\which\which.js:68:19)n' +
gyp verb `which` failed ' at E (C:\Users\Software
Engineer\Desktop\App code\node_modules\which\which.js:80:29)n'
+
gyp verb `which` failed ' at C:\Users\Software
Engineer\Desktop\App code\node_modules\which\which.js:89:16n' +
gyp verb `which` failed ' at C:\Users\Software
Engineer\Desktop\App code\node_modules\isexe\index.js:42:5n' +
gyp verb `which` failed ' at C:\Users\Software
Engineer\Desktop\App code\node_modules\isexe\windows.js:36:5n' +
gyp verb `which` failed ' at FSReqCallback.oncomplete
(fs.js:165:21)',
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:Python27python.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:UsersSoftware
EngineerDesktopApp codenode_modulesnode-
gyplibconfigure.js:484:19)
gyp ERR! stack at PythonFinder.<anonymous> (C:UsersSoftware
EngineerDesktopApp codenode_modulesnode-
gyplibconfigure.js:509:16)
gyp ERR! stack at callback (C:UsersSoftware
EngineerDesktopApp codenode_modulesgraceful-
fspolyfills.js:289:20)
gyp ERR! stack at FSReqCallback.oncomplete (fs.js:165:21)
gyp ERR! System Windows_NT 10.0.17763
gyp ERR! command "C:\Program Files\nodejs\node.exe"
"C:\Users\Software Engineer\Desktop\App
code\node_modules\node-gyp\bin\node-gyp.js" "rebuild" "--
verbose" "--libsass_ext=" "--libsass_cflags=" "--
libsass_ldflags=" "--libsass_library="
gyp ERR! cwd C:UsersSoftware EngineerDesktopApp
codenode_modulesnode-sass
gyp ERR! node -v v12.6.0
gyp ERR! node-gyp -v v3.8.0
gyp ERR! not ok
Build failed with error code: 1
npm WARN tslint@5.18.0 requires a peer of typescript@>=2.3.0-
dev || >=2.4.0-dev || >=2.5.0-dev || >=2.6.0-dev || >=2.7.0-
dev || >=2.8.0-dev || >=2.9.0-dev || >=3.0.0-dev || >= 3.1.0-
dev || >= 3.2.0-dev but none is installed. You must install
peer dependencies yourself.
npm WARN tsutils@1.9.1 requires a peer of typescript@>=2.0.0
|| >=2.0.0-dev || >=2.1.0-dev || >=2.2.0-dev || >=2.3.0-dev
|| >= 2.4.0-dev but none is installed. You must install peer
dependencies yourself.
npm WARN tsutils@2.29.0 requires a peer of typescript@>=2.1.0
|| >=2.1.0-dev || >=2.2.0-dev || >=2.3.0-dev || >=2.4.0-dev
|| >=2.5.0-dev || >=2.6.0-dev || >=2.7.0-dev || >=2.8.0-dev
|| >=2.9.0-dev || >= 3.0.0-dev || >= 3.1.0-dev but none is
installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY:
fsevents@1.2.9 (node_modulesfsevents):
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@4.5.3 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:UsersSoftware
EngineerAppDataRoamingnpm-cache_logs2019-07-
22T01_30_20_067Z-debug.log
[ERROR] An error occurred while running subprocess npm.
npm.cmd i -D -E @ionic/app-scripts exited with exit
code 1.
Re-running this command with the --verbose flag may
provide more information.
您面临的问题是因为node-sass缺少供应商二进制文件。您可以设置代理，以便它设法在线下载二进制文件。
另一种选择是手动下载文件，并将 npm config sass_binary_path 属性设置为指向该文件。
npm 配置集sass_binary_path"您的文件路径">
完成后，运行：
npm 重建节点 sass