安装npm，安装vue,安装webpack, 一直到创建新项目，失败

跟着vue.js教程学vue,

1、下载了npm,安装到D:\nodejs。成功。查看版本6.14.5
将全局文件夹设为nodejs\node_global,cache设为nodejs\node_cache ok
2、安装cnpm
3、安装@vue/cli
4、安装webpack
5、输入 vue ui打开网页，

创建新项目，指定文件夹，用默认创建，失败！

D:\nodejs\node_global>vue ui
� Starting GUI...
� Ready on http://localhost:8000
'vue' 不是内部或外部命令，也不是可运行的程序
或批处理文件。
Error: spawn vue ENOENT
at notFoundError (D:\nodejs\node_global\node_modules\@vue\cli\node_modules_cross-spawn@6.0.5@cross-spawn\lib\enoent.js:6:26)
at verifyENOENT (D:\nodejs\node_global\node_modules\@vue\cli\node_modules_cross-spawn@6.0.5@cross-spawn\lib\enoent.js:40:16)
at ChildProcess.cp.emit (D:\nodejs\node_global\node_modules\@vue\cli\node_modules_cross-spawn@6.0.5@cross-spawn\lib\enoent.js:27:25)
at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12) {
code: 'ENOENT',
errno: 'ENOENT',
syscall: 'spawn vue',
path: 'vue',
spawnargs: [
'create',
'test',
'--skipGetStarted',
'--packageManager',
'npm',
'--inlinePreset',
'{"useConfigFiles":false,"plugins":{"@vue/cli-plugin-babel":{},"@vue/cli-plugin-eslint":{"config":"base","lintOn":["save"]}}}'
],
stdout: '',
stderr: null,
failed: true,
signal: null,
cmd: 'vue create test --skipGetStarted --packageManager npm --inlinePreset {"useConfigFiles":false,"plugins":{"@vue/cli-plugin-babel":{},"@vue/cli-plugin-eslint":{"config":"base","lintOn":["save"]}}}',
timedOut: false,
killed: false
}
TypeError: Cannot read property 'indexOf' of undefined
at D:\nodejs\node_global\node_modules\@vue\cli\nodemodules\@vue_cli-ui@4.4.6@@vue\cli-ui\apollo-server\connectors\projects.js:274:35
at processTicksAndRejections (internal/process/task_queues.js:97:5)
at async Object.wrap (D:\nodejs\node_global\node_modules\@vue\cli\nodemodules\@vue_cli-ui@4.4.6@@vue\cli-ui\apollo-server\connectors\progress.js:39:14)
'vue' 不是内部或外部命令，也不是可运行的程序
或批处理文件。
Error: spawn vue ENOENT
at notFoundError (D:\nodejs\node_global\node_modules\@vue\cli\node_modules_cross-spawn@6.0.5@cross-spawn\lib\enoent.js:6:26)
at verifyENOENT (D:\nodejs\node_global\node_modules\@vue\cli\node_modules_cross-spawn@6.0.5@cross-spawn\lib\enoent.js:40:16)
at ChildProcess.cp.emit (D:\nodejs\node_global\node_modules\@vue\cli\node_modules_cross-spawn@6.0.5@cross-spawn\lib\enoent.js:27:25)
at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12) {
code: 'ENOENT',
errno: 'ENOENT',
syscall: 'spawn vue',
path: 'vue',
spawnargs: [
'create',
'test',
'--skipGetStarted',
'--packageManager',
'npm',
'--inlinePreset',
'{"useConfigFiles":false,"plugins":{"@vue/cli-plugin-babel":{},"@vue/cli-plugin-eslint":{"config":"base","lintOn":["save"]}}}'
],
stdout: '',
stderr: null,
failed: true,
signal: null,
cmd: 'vue create test --skipGetStarted --packageManager npm --inlinePreset {"useConfigFiles":false,"plugins":{"@vue/cli-plugin-babel":{},"@vue/cli-plugin-eslint":{"config":"base","lintOn":["save"]}}}',
timedOut: false,
killed: false
}
TypeError: Cannot read property 'indexOf' of undefined
at D:\nodejs\node_global\node_modules\@vue\cli\nodemodules\@vue_cli-ui@4.4.6@@vue\cli-ui\apollo-server\connectors\projects.js:274:35
at processTicksAndRejections (internal/process/task_queues.js:97:5)
at async Object.wrap (D:\nodejs\node_global\node_modules\@vue\cli\nodemodules\@vue_cli-ui@4.4.6@@vue\cli-ui\apollo-server\connectors\progress.js:39:14)