Error with node.js deployment on Linux Azure web app - angularjs

Question

I habe an azur app service (Linux), connected to a bitbucket git repository running.
When I try to deploy it, I get this error:
> lhfrontend#1.0.0 postinstall /home/site/wwwroot
> npm run webdriver:update
npm WARN invalid config loglevel="notice"
> lhfrontend#1.0.0 webdriver:update /home/site/wwwroot
> node ./node_modules/protractor/bin/webdriver-manager update
module.js:471
throw err;
^
Error: Cannot find module '/home/site/wwwroot/node_modules/protractor/bin/webdriver-manager'
An error has occurred during web site deployment.
at Function.Module._resolveFilename (module.js:469:15)
npm failed
at Function.Module._load (module.js:417:25)
at Module.runMain (module.js:604:10)
at run (bootstrap_node.js:389:7)
at startup (bootstrap_node.js:149:9)
at bootstrap_node.js:504:3
npm ERR! Linux 4.4.0-108-generic
npm ERR! argv "/opt/nodejs/6.11.0/bin/node" "/usr/bin/node_modules/npm/bin/npm-cli.js" "run" "webdriver:update"
npm ERR! node v6.11.0
npm ERR! npm v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! lhfrontend#1.0.0 webdriver:update: `node ./node_modules/protractor/bin/webdriver-manager update`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the lhfrontend#1.0.0 webdriver:update script 'node ./node_modules/protractor/bin/webdriver-manager update'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the lhfrontend package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node ./node_modules/protractor/bin/webdriver-manager update
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs lhfrontend
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls lhfrontend
npm ERR! There is likely additional logging output above.
Does any one have an idea, how to fix this?
Thanks in advance,
Dennis

Answer 1

Check if you have installed protractor module. If not, run this command in your app's root:
npm install protractor
Or add this to the dependencies section of your package.json:
"dependencies": {
"protractor": "^5.2.2"
}