Building a bootable JAR throws NPE when feature pack <location> element content is not well formed

Run a reproducer: # clone an example app repo $ git clone git@github.com:fabiobrz/bootablejar-json-logging-example.git $ cd bootablejar-json-logging-example/ # this will work $ mvn clean package ... [INFO] CLI scripts execution done. [INFO] Executing CLI, CLI Session, scripts=[scripts/logging.cli], resolve-expressions= true , properties-file= null [INFO] CLI scripts execution done. [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 20.466 s [INFO] Finished at: 2021-03-16T13:12:30+01:00 [INFO] ------------------------------------------------------------------------ To see the NPE just pass an empty value for one of the properties used in the WildFly Feature Pack <location> element: $ mvn clean package -Djboss.xp.galleon.feature.pack.groupid= ... [INFO] Building server based on [[:wildfly-galleon-pack:22.0.0.Final inherit-packages= false inheritConfigs= false ]] galleon feature-packs [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 2.081 s [INFO] Finished at: 2021-03-16T13:23:32+01:00 [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.wildfly.plugins:wildfly-jar-maven-plugin:2.0.2.Final: package ( default ) on project bootablejar-json-logging-example: Execution default of goal org.wildfly.plugins:wildfly-jar-maven-plugin:2.0.2.Final: package failed.: NullPointerException -> [Help 1]