npm start error

/usr/src/jigar/nodjswebserver/react-canvas/node_modules/gulp/node_modules/orchestrator/index.js:89
throw new Error('pass strings or arrays of strings');
^
Error: pass strings or arrays of strings
at Gulp.Orchestrator.start (/usr/src/jigar/nodjswebserver/react-canvas/node_modules/gulp/node_modules/orchestrator/index.js:89:12)
at /usr/src/jigar/nodjswebserver/react-canvas/node_modules/gulp/bin/gulp.js:129:20
at process._tickCallback (node.js:355:11)
at Function.Module.runMain (module.js:503:11)
at startup (node.js:129:16)
at node.js:814:3
## npm log

0 info it worked if it ends with ok
1 verbose cli [ '/usr/local/bin/node', '/usr/local/bin/npm', 'start', '8085' ]
2 info using npm@2.5.1
3 info using node@v0.12.0
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info prestart react-canvas@0.0.1
6 info start react-canvas@0.0.1
7 verbose unsafe-perm in lifecycle true
8 info react-canvas@0.0.1 Failed to exec start script
9 verbose stack Error: react-canvas@0.0.1 start: `gulp 8085`
9 verbose stack Exit status 1
9 verbose stack at EventEmitter. (/usr/local/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. (/usr/local/lib/node_modules/npm/lib/utils/spawn.js:14:12)
9 verbose stack at ChildProcess.emit (events.js:110:17)
9 verbose stack at maybeClose (child_process.js:1008:16)
9 verbose stack at Process.ChildProcess._handle.onexit (child_process.js:1080:5)
10 verbose pkgid react-canvas@0.0.1
11 verbose cwd /usr/src/jigar/nodjswebserver/react-canvas
12 error Linux 3.10.0-123.13.2.el7.x86_64
13 error argv "/usr/local/bin/node" "/usr/local/bin/npm" "start" "8085"
14 error node v0.12.0
15 error npm v2.5.1
16 error code ELIFECYCLE
17 error react-canvas@0.0.1 start: `gulp 8085`
17 error Exit status 1
18 error Failed at the react-canvas@0.0.1 start script 'gulp 8085'.
18 error This is most likely a problem with the react-canvas package,
18 error not with npm itself.
18 error Tell the author that this fails on your system:
18 error gulp 8085
18 error You can get their info via:
18 error npm owner ls react-canvas
18 error There is likely additional logging output above.
19 verbose exit [ 1, true ]
~

Reproduce the failure with `npm start 8085`, then inspect the start command shown in the npm log (`gulp 8085`) and the reported Gulp/Orchestrator stack trace. Done means the start command no longer exits with “pass strings or arrays of strings” and the project starts successfully.

Written by the indexing model from the issue text.