1. 日志如下：

0 info it worked if it ends with ok
1 verbose cli [ 'D:\\myev\\nodejs\\node.exe',
1 verbose cli   'D:\\myev\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli   'run',
1 verbose cli   'dev' ]
2 info using npm@5.3.0
3 info using node@v8.12.0
4 verbose run-script [ 'predev', 'dev', 'postdev' ]
5 info lifecycle lawcloud@1.0.0~predev: lawcloud@1.0.0
6 info lifecycle lawcloud@1.0.0~dev: lawcloud@1.0.0
7 verbose lifecycle lawcloud@1.0.0~dev: unsafe-perm in lifecycle true
8 verbose lifecycle lawcloud@1.0.0~dev: PATH: D:\myev\nodejs\node_modules\npm\bin\node-gyp-bin;F:\Zpro\caseCloudFront\node_modules\.bin;D:\TxImg\ImageMagick-7.0.1-Q16;D:\腾讯智图\ImageMagick-7.0.1-Q16;D:\;讯智图\ImageMagick-7.0.1-Q16;D:;;讯智图\ImageMagick-7.0.1-Q16;%S;;temRoot%\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;D:\myev\nodejs\;D:\Git\cmd;D:\myev\tortoisegit\bin;D:\myev\nodejs\node_global\;D:\Microsoft VS Code\bin;D:\Git\cmd;D:\vscode\Microsoft VS Code\bin
9 verbose lifecycle lawcloud@1.0.0~dev: CWD: F:\Zpro\caseCloudFront
10 silly lifecycle lawcloud@1.0.0~dev: Args: [ '/d /s /c', 'node build/dev-server.js' ]
11 silly lifecycle lawcloud@1.0.0~dev: Returned: code: 1  signal: null
12 info lifecycle lawcloud@1.0.0~dev: Failed to exec dev script
13 verbose stack Error: lawcloud@1.0.0 dev: `node build/dev-server.js`
13 verbose stack Exit status 1
13 verbose stack     at EventEmitter.<anonymous> (D:\myev\nodejs\node_modules\npm\lib\utils\lifecycle.js:289:16)
13 verbose stack     at emitTwo (events.js:126:13)
13 verbose stack     at EventEmitter.emit (events.js:214:7)
13 verbose stack     at ChildProcess.<anonymous> (D:\myev\nodejs\node_modules\npm\lib\utils\spawn.js:40:14)
13 verbose stack     at emitTwo (events.js:126:13)
13 verbose stack     at ChildProcess.emit (events.js:214:7)
13 verbose stack     at maybeClose (internal/child_process.js:915:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:209:5)
14 verbose pkgid lawcloud@1.0.0
15 verbose cwd F:\Zpro\caseCloudFront
16 verbose Windows_NT 6.1.7601
17 verbose argv "D:\\myev\\nodejs\\node.exe" "D:\\myev\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "run" "dev"
18 verbose node v8.12.0
19 verbose npm  v5.3.0
20 error code ELIFECYCLE
21 error errno 1
22 error lawcloud@1.0.0 dev: `node build/dev-server.js`
22 error Exit status 1
23 error Failed at the lawcloud@1.0.0 dev script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]

1. 这是什么原因导致的？