javascript - Error: Cannot find module 'asn1' when trying to run a node.js app -


i trying run node.js app on azure app service node 8.1.4.

the app runs fine on local machine.

i copied entire app, including node_modules, azure app service, this:

mon sep 11 2017 07:52:14 gmt+0000 (coordinated universal time): application  has thrown uncaught exception , terminated: error: cannot find module 'asn1' @ function.module._resolvefilename (module.js:338:15) @ function.module._load (module.js:289:25) @ module.require (module.js:366:17) @ require (module.js:385:17) @ object.<anonymous>  (d:\home\site\wwwroot\node_modules\sshpk\lib\formats\pem.js:9:12) @ module._compile (module.js:435:26) @ object.module._extensions..js (module.js:442:10) @ module.load (module.js:356:32) @ function.module._load (module.js:313:12) @ module.require (module.js:366:17) @ require (module.js:385:17)

this coming package called sshpk. here dependencies: 

"dependencies": {     "asn1": "~0.2.3",     "assert-plus": "^1.0.0",     "bcrypt-pbkdf": "^1.0.0",     "dashdash": "^1.12.0",     "ecc-jsbn": "~0.1.1",     "getpass": "^0.1.1",     "jsbn": "~0.1.0",     "tweetnacl": "~0.14.0"   },

i checked , asn1 package there in top-level node_modules folder. copied asn1 package node_modules inside sshpk, didn't help.

what can reason why package still not found? how can troubleshoot this?

update: tried running npm cache clear , npm install -g npm on azure server, nothing changed.

the entire top-level package.json:

{   "name": "my_project",   "version": "0.0.0",   "private": true,   "scripts": {     "start": "node --inspect server.js"   },   "dependencies": {     "@google-cloud/datastore": "^1.1.0",     "asn1": "^0.2.3",     "async": "^2.1.2",     "body-parser": "~1.15.2",     "cookie-parser": "~1.4.3",     "debug": "~2.2.0",     "documentdb": "^1.10.0",     "dotenv": "^4.0.0",     "express": "~4.14.0",     "morgan": "~1.7.0",     "mssql": "^4.0.4",     "serve-favicon": "~2.3.0"   } }


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