Webpack failure during JHipster Prod Package - jhipster

Question

I generated a vanilla JHipster microservice gateway. With JHipster registry running I am able to start it using ./mvnw and it works. I can package it using ./mvnw -Pdev package and that works. However, if I try to package it using ./mvnw -Pprod package it fails apparently during the webpack build prod step.
JHipster version 4.14.0
Yarn version 1.3.2
Node version v6.11.5
yo-rc.json
{
"generator-jhipster": {
"promptValues": {
"packageName": "org.jhipster.blog",
"nativeLanguage": "en"
},
"jhipsterVersion": "4.14.0",
"baseName": "blog",
"packageName": "org.jhipster.blog",
"packageFolder": "org/jhipster/blog",
"serverPort": "8080",
"authenticationType": "jwt",
"cacheProvider": "hazelcast",
"enableHibernateCache": true,
"websocket": false,
"databaseType": "sql",
"devDatabaseType": "h2Disk",
"prodDatabaseType": "postgresql",
"searchEngine": "elasticsearch",
"messageBroker": false,
"serviceDiscoveryType": "eureka",
"buildTool": "maven",
"enableSocialSignIn": false,
"enableSwaggerCodegen": false,
"jwtSecretKey": "0b9d434149a3efef6af7362acaf33585d5eaa492",
"clientFramework": "angularX",
"useSass": false,
"clientPackageManager": "yarn",
"applicationType": "gateway",
"testFrameworks": [
"gatling",
"protractor"
],
"jhiPrefix": "jhi",
"enableTranslation": true,
"nativeLanguage": "en",
"languages": [
"en",
"es"
]
}
}
Maven Output
[INFO] --- frontend-maven-plugin:1.6:yarn (webpack build prod) # blog ---
[INFO] yarn not inheriting proxy config from Maven
[INFO] Running 'yarn run webpack:prod' in /Users/mschreiber/temp/microservice-demo/blog
[INFO] yarn run v1.3.2
[INFO] $ yarn run cleanup && yarn run webpack:prod:main && yarn run clean-www
[INFO] $ rimraf target/{aot,www}
[INFO] $ yarn run webpack -- --config webpack/webpack.prod.js --profile
[ERROR] warning From Yarn 1.0 onwards, scripts don't require "--" for options to be forwarded. In a future version, any explicit "--" will be forwarded as-is to the scripts.
[INFO] $ node --max_old_space_size=4096 node_modules/webpack/bin/webpack.js --config webpack/webpack.prod.js --profile
[INFO] MergetJsonsWebpackPlugin compilation started...
[INFO] MergetJsonsWebpackPlugin compilation completed...
[ERROR] buffer.js:202
[ERROR] throw new TypeError(kFromErrorMsg);
[ERROR] ^
[ERROR]
[ERROR] TypeError: First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.
[ERROR] at Function.Buffer.from (buffer.js:202:9)
[ERROR] at new Buffer (buffer.js:158:17)
[ERROR] at writeOut (/Users/mschreiber/temp/microservice-demo/blog/node_modules/webpack/lib/Compiler.js:334:17)
[ERROR] at require.forEach (/Users/mschreiber/temp/microservice-demo/blog/node_modules/webpack/lib/Compiler.js:345:12)
[ERROR] at /Users/mschreiber/temp/microservice-demo/blog/node_modules/webpack/node_modules/async/dist/async.js:3096:16
[ERROR] at eachOfArrayLike (/Users/mschreiber/temp/microservice-demo/blog/node_modules/webpack/node_modules/async/dist/async.js:1055:9)
[ERROR] at eachOf (/Users/mschreiber/temp/microservice-demo/blog/node_modules/webpack/node_modules/async/dist/async.js:1103:5)
[ERROR] at Object.eachLimit (/Users/mschreiber/temp/microservice-demo/blog/node_modules/webpack/node_modules/async/dist/async.js:3158:5)
[ERROR] at emitFiles (/Users/mschreiber/temp/microservice-demo/blog/node_modules/webpack/lib/Compiler.js:315:21)
[ERROR] at /Users/mschreiber/temp/microservice-demo/blog/node_modules/mkdirp/index.js:30:20
[ERROR] at FSReqWrap.oncomplete (fs.js:135:15)
[ERROR] error Command failed with exit code 1.
[INFO] info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
[ERROR] error Command failed with exit code 1.
[INFO] info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
[ERROR] error Command failed with exit code 1.
[INFO] info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:05 min
[INFO] Finished at: 2018-03-06T08:32:03-05:00
[INFO] Final Memory: 44M/372M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.github.eirslett:frontend-maven-plugin:1.6:yarn (webpack build prod) on project blog: Failed to run task: 'yarn run webpack:prod' failed. org.apache.commons.exec.ExecuteException: Process exited with an error: 1 (Exit value: 1) -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

Answer 1

This issue is related to the workbox-webpack-plugin dependency of JHipster and is fixed in the v4.14.1 release (related commit). To fix it in your generated project, make the following changes:
package.json:
- "workbox-webpack-plugin": "3.0.0-alpha.3",
+ "workbox-webpack-plugin": "3.0.0-beta.1",
webpack/webpack.prod.js
- new WorkboxPlugin({
+ new WorkboxPlugin.GenerateSW({
You can also upgrade to the latest generator-jhipster release with yarn global upgrade generator-jhipster, then upgrade your project with jhipster upgrade. For more info on the upgrade command, see the relevant documentation.