node.js - npm packaged installed but can not be found when running nightwatch Jenkins -


i building node.js project on jenkins, came across wired error. detail description following (full console log shown @ end of question):

on jenkins, after npm install, tried run nightwatch e2e testing, following error message showed up:

 iam-ui@0.0.1 test:e2e-chrome /users/shared/jenkins/home/workspace/e2e-iam-practice node_modules/nightwatch/bin/nightwatch --env chrome  [0;31mthere error while starting test runner: [0;90merror: cannot find module 'q'  @ function.module._resolvefilename (module.js:469:15) @ function.module._load (module.js:417:25) @ module.require (module.js:497:17) @ require (internal/module.js:20:19) @ object.<anonymous> (/users/shared/jenkins/home/workspace/e2e-iam-practice/node_modules/nightwatch/lib/runner/cli/clirunner.js:3:9) @ module._compile (module.js:570:32) @ object.module._extensions..js (module.js:579:10) @ module.load (module.js:487:32) @ trymoduleload (module.js:446:12) @ function.module._load (module.js:438:3)   npm err! darwin 16.7.0 npm err! argv

it appears nightwatch.js looking node module called q can not find it. tried @ node_modules after npm install, found on jenkins console output:

+ echo 'node_modules , q\n\n' node_modules , q   + ls -l node_modules/q/ total 272 -rw-r--r--  1 jenkins  jenkins  29828 mar 21 21:14 changes.md -rw-r--r--  1 jenkins  jenkins   1092 mar 21 21:09 license -rw-r--r--  1 jenkins  jenkins  25386 mar 21 21:09 readme.md -rw-r--r--  1 jenkins  jenkins   1721 sep 11 14:27 package.json -rw-r--r--  1 jenkins  jenkins  63932 mar 21 21:09 q.js -rw-r--r--  1 jenkins  jenkins    941 feb 18  2016 queue.js + echo 'nested node_modules , q\n\n' nested node_modules , q   + ls -l node_modules/nightwatch/node_modules/q/ total 272 -rw-r--r--  1 jenkins  jenkins  29597 may 16  2015 changes.md -rw-r--r--  1 jenkins  jenkins   1092 may 16  2015 license -rw-r--r--  1 jenkins  jenkins  25760 may 16  2015 readme.md -rw-r--r--  1 jenkins  jenkins   1629 sep 11 14:27 package.json -rw-r--r--  1 jenkins  jenkins  62792 may 16  2015 q.js -rw-r--r--  1 jenkins  jenkins    941 may 16  2015 queue.js + npm run test:e2e-chrome

it shows both outer q module , nested q module inside nightwatch installed. 1 have idea possibly reason ? thanks.


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