After upgrading to 6.4.1 HF1, to resolve the log4j vulnerabilities CVE-2021-44228 and CVE-2017-5645 you may see some new warnings in the server.log like:
2021-12-13 21:13:39,075 WARN [org.jboss.as.server.deployment.annotation.ResourceRootIndexer] WFLYSRV0003: Could not index class META-INF/versions/9/module-info.class at /content/simulation-service-6.4.0-1.war/WEB-INF/lib/log4j-api-2.15.0.jar: java.lang.IllegalStateException: Unknown tag! pos=4 poolCount = 33
at org.jboss.jandex.Indexer.processConstantPool(Indexer.java:1416)
at org.jboss.jandex.Indexer.index(Indexer.java:1450)
at org.jboss.as.server.deployment.annotation.ResourceRootIndexer.indexResourceRoot(ResourceRootIndexer.java:99)
at org.jboss.as.server.deployment.annotation.AnnotationIndexProcessor.deploy(AnnotationIndexProcessor.java:51)
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:165)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:2032)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1955)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
2021-12-14 08:38:57,697 INFO [org.jboss.stdio.AbstractLoggingWriter] 2021-12-14 08:38:57,697 ServerService Thread Pool -- 76 ERROR Unrecognized conversion specifier [xwEx] starting at position 161 in conversion pattern.
2021-12-14 13:32:26,428 INFO [stdout] Caused by: java.lang.NoSuchMethodError: org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverter.newInstance([Ljava/lang/String;)Lorg/apache/logging/log4j/core/pattern/ExtendedThrowablePatternConverter;
Release : 6.4.1
Component : AUTOMIC AUTOMATION INTELLIGENCE ENGINE
These messages can safely be ignored, they should not impact any AAI functionality.
They will be addressed in a future release.