使用 node-sass-middleware 运行 express 应用程序在 ubuntu 上给我这个错误：
0 info it worked if it ends with ok
1 verbose cli [ '/home/mohamed/.nvm/versions/node/v0.12.7/bin/node',
1 verbose cli '/home/mohamed/.nvm/versions/node/v0.12.7/bin/npm',
1 verbose cli 'start' ]
2 info using npm@2.11.3
3 info using node@v0.12.7
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info prestart arabicoders@3.3.1
6 info start arabicoders@3.3.1
7 verbose unsafe-perm in lifecycle true
8 info arabicoders@3.3.1 Failed to exec start script
9 verbose stack Error: arabicoders@3.3.1 start: `node app.js`
9 verbose stack Exit status 1
9 verbose stack at EventEmitter.<anonymous> (/home/mohamed/.nvm/versions/node/v0.12.7/lib/node_modules/npm/lib/utils/lifecycle.js:213:16)
9 verbose stack at EventEmitter.emit (events.js:110:17)
9 verbose stack at ChildProcess.<anonymous> (/home/mohamed/.nvm/versions/node/v0.12.7/lib/node_modules/npm/lib/utils/spawn.js:24:14)
9 verbose stack at ChildProcess.emit (events.js:110:17)
9 verbose stack at maybeClose (child_process.js:1015:16)
9 verbose stack at Process.ChildProcess._handle.onexit (child_process.js:1087:5)
10 verbose pkgid arabicoders@3.3.1
11 verbose cwd /home/mohamed/projects/arabicoders
12 error Linux 3.19.0-28-generic
13 error argv "/home/mohamed/.nvm/versions/node/v0.12.7/bin/node" "/home/mohamed/.nvm/versions/node/v0.12.7/bin/npm" "start"
14 error node v0.12.7
15 error npm v2.11.3
16 error code ELIFECYCLE
17 error arabicoders@3.3.1 start: `node app.js`
17 error Exit status 1
18 error Failed at the arabicoders@3.3.1 start script 'node app.js'.
18 error This is most likely a problem with the arabicoders package,
18 error not with npm itself.
18 error Tell the author that this fails on your system:
18 error node app.js
18 error You can get their info via:
18 error npm owner ls arabicoders
18 error There is likely additional logging output above.
19 verbose exit [ 1, true ]