yarn error building graylog plugin with mvn package: The "path" argument must be of type string. Received type undefined

Question

I'm following the graylog [doc][1] for building plugins, but i'm getting a yarn error when executing "mvn package" inside the plugin directory.

[INFO] --- frontend-maven-plugin:1.9.1:yarn (yarn run build) @ graylog-plugin-

mytestplugin ---
[INFO] Running 'yarn run build' in /mnt/c/Users/alexander.weidner/Documents/graylog/graylog-project-repos/graylog-plugin-mytestplugin
[INFO] yarn run v1.19.2
[INFO] $ webpack
[INFO] [webpack-cli] Failed to load '/mnt/c/Users/alexander.weidner/Documents/graylog/graylog-project-repos/graylog-plugin-mytestplugin/webpack.config.js' config
[INFO] [webpack-cli] TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received type undefined
[INFO]     at validateString (internal/validators.js:112:11)
[INFO]     at Object.resolve (path.js:981:7)
[INFO]     at new PluginWebpackConfig (/mnt/c/Users/alexander.weidner/Documents/graylog/graylog-project-repos/graylog-plugin-mytestplugin/node_modules/graylog-web-plugin/lib/PluginWebpackConfig.js:39:38)
[INFO]     at Object.<anonymous> (/mnt/c/Users/alexander.weidner/Documents/graylog/graylog-project-repos/graylog-plugin-mytestplugin/webpack.config.js:6:18)
[INFO]     at Module._compile (internal/modules/cjs/loader.js:959:30)
[INFO]     at Object.Module._extensions..js (internal/modules/cjs/loader.js:995:10)
[INFO]     at Module.load (internal/modules/cjs/loader.js:815:32)
[INFO]     at Function.Module._load (internal/modules/cjs/loader.js:727:14)
[INFO]     at Module.require (internal/modules/cjs/loader.js:852:19)
[INFO]     at require (internal/modules/cjs/helpers.js:74:18) {
[INFO]   code: 'ERR_INVALID_ARG_TYPE'
[INFO] }
[INFO] error Command failed with exit code 2.
[INFO] error Command failed with exit code 2.info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  06:44 min
[INFO] Finished at: 2022-05-12T16:12:30+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.github.eirslett:frontend-maven-plugin:1.9.1:yarn (yarn run build) on project graylog-plugin-mytestplugin: Failed to run task: 'yarn run build' failed. org.apache.commons.exec.ExecuteException: Process exited with an error: 2 (Exit value: 2) -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal com.github.eirslett:frontend-maven-plugin:1.9.1:yarn (yarn run build) on project graylog-plugin-mytestplugin: Failed to run task
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:306)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:211)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:165)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:157)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:121)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:127)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:294)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: org.apache.maven.plugin.MojoFailureException: Failed to run task
    at com.github.eirslett.maven.plugins.frontend.mojo.AbstractFrontendMojo.execute (AbstractFrontendMojo.java:100)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:301)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:211)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:165)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:157)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:121)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:127)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:294)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: com.github.eirslett.maven.plugins.frontend.lib.TaskRunnerException: 'yarn run build' failed.
    at com.github.eirslett.maven.plugins.frontend.lib.YarnTaskExecutor.execute (YarnTaskExecutor.java:64)
    at com.github.eirslett.maven.plugins.frontend.mojo.YarnMojo.execute (YarnMojo.java:65)
    at com.github.eirslett.maven.plugins.frontend.mojo.AbstractFrontendMojo.execute (AbstractFrontendMojo.java:94)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:301)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:211)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:165)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:157)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:121)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:127)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:294)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: com.github.eirslett.maven.plugins.frontend.lib.ProcessExecutionException: org.apache.commons.exec.ExecuteException: Process exited with an error: 2 (Exit value: 2)
    at com.github.eirslett.maven.plugins.frontend.lib.ProcessExecutor.execute (ProcessExecutor.java:82)
    at com.github.eirslett.maven.plugins.frontend.lib.ProcessExecutor.executeAndRedirectOutput (ProcessExecutor.java:64)
    at com.github.eirslett.maven.plugins.frontend.lib.YarnExecutor.executeAndRedirectOutput (YarnExecutor.java:28)
    at com.github.eirslett.maven.plugins.frontend.lib.YarnTaskExecutor.execute (YarnTaskExecutor.java:58)
    at com.github.eirslett.maven.plugins.frontend.mojo.YarnMojo.execute (YarnMojo.java:65)
    at com.github.eirslett.maven.plugins.frontend.mojo.AbstractFrontendMojo.execute (AbstractFrontendMojo.java:94)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:301)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:211)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:165)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:157)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:121)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:127)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:294)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: org.apache.commons.exec.ExecuteException: Process exited with an error: 2 (Exit value: 2)
    at org.apache.commons.exec.DefaultExecutor.executeInternal (DefaultExecutor.java:404)
    at org.apache.commons.exec.DefaultExecutor.execute (DefaultExecutor.java:166)
    at com.github.eirslett.maven.plugins.frontend.lib.ProcessExecutor.execute (ProcessExecutor.java:74)
    at com.github.eirslett.maven.plugins.frontend.lib.ProcessExecutor.executeAndRedirectOutput (ProcessExecutor.java:64)
    at com.github.eirslett.maven.plugins.frontend.lib.YarnExecutor.executeAndRedirectOutput (YarnExecutor.java:28)
    at com.github.eirslett.maven.plugins.frontend.lib.YarnTaskExecutor.execute (YarnTaskExecutor.java:58)
    at com.github.eirslett.maven.plugins.frontend.mojo.YarnMojo.execute (YarnMojo.java:65)
    at com.github.eirslett.maven.plugins.frontend.mojo.AbstractFrontendMojo.execute (AbstractFrontendMojo.java:94)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:301)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:211)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:165)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:157)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:121)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:127)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:294)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
[ERROR]
[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

yarn version is 14.7.0

I tried to delete the node_modules directory and "yarn install", like mentioned [here][2]. Nothing seems to work. replacing code segments inside the faulty .js files isn't a solution either, because there's always another line, where a path is aggregated and the error is thrown.

*EDIT: I figured it out on myself, inside webpack.config.js:

// Remember to use the same name here and in `getUniqueId()` in the java MetaData class
module.exports = new PluginWebpackConfig(__dirname, 'com.whatever.testPluginPlugin', loadBuildConfig(path.resolve(__dirname, './build.config')), {
  // Here goes your additional webpack configuration.
});

inside the PluginWebpackConfig the first argument, the .jar target path, was missing. For whatever reason...

  [1]: https://docs.graylog.org/docs/plugins
  [2]: https://stackoverflow.com/questions/60234640/typeerror-err-invali

d-arg-type-the-path-argument-must-be-of-type-string-re