NPE Error when installing an authenticator which register itself on XWiki 15.3+

2023-09-13 15:40:03,712 [extension/wiki:xwiki job group daemon thread - org.xwiki.extension.job.internal.InstallJob@7bcc3a81([extension, action, com.xwiki.activedirectory:application-activedirectory-ui, wiki:xwiki])] ERROR .o.i.DefaultObservationManager - Failed to send event [org.xwiki.job.event.JobFinishedEvent@3692ce61] to listener [com.xpn.xwiki.XWiki@714162c1]
java.lang.NullPointerException: Cannot invoke "java.lang.Class.getName()" because "authClass" is null
        at com.xpn.xwiki.XWiki.onJobFinished(XWiki.java:7905)
        at com.xpn.xwiki.XWiki.onEvent(XWiki.java:7862)
        at org.xwiki.observation.internal.DefaultObservationManager.notify(DefaultObservationManager.java:338)
        at org.xwiki.observation.internal.DefaultObservationManager.notify(DefaultObservationManager.java:303)
        at org.xwiki.job.AbstractJob.jobFinished(AbstractJob.java:338)
        at org.xwiki.extension.job.internal.AbstractExtensionJob.jobFinished(AbstractExtensionJob.java:134)
        at org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:251)
        at org.xwiki.job.AbstractJob.run(AbstractJob.java:223)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
        at java.base/java.lang.Thread.run(Thread.java:833)