build-helper-maven-plugin: java.lang.IllegalArgumentException: version can neither be null, empty nor blank

[jamincollins]

I'm running into an issue with build-helper-maven-plugin in a project I'm attempting to build.

I was previously (roughly about a year ago) able to build this project without issue on this host.

I'm now getting java.lang.IllegalArgumentException: version can neither be null, empty nor blank. Others within the project can still build fine.

I've tried a fresh source checkout and purging my maven cache. I've also tried updating the build-helper-maven-plugin version used by the project to what I understand is the latest (3.0.0), no change.

Full build logs from both attempts are available here:

• https://asgardsrealm.net/tmp/forge/build-helper-maven-plugin-1.8.log
• https://asgardsrealm.net/tmp/forge/build-helper-maven-plugin-3.0.0.log

Hoping for some guidance on how to debug this.

Thanks in advance.

[jamincollins]

This appears to be maven related. Rolling back to maven 3.6.1 allows the project to build, under maven 3.6.2 the above errors happen, regardless of plugin version.

[veikokaap]

I've reported the same bug (#81) and created a pull request to fix it (#82), but it seems this project is unmaintained at this moment since no response to either the bug or pull request has seen any response in almost a month.

[stefanseifert]

closing as duplicate of #81