When executing the command

     mvn clean generate-resources -Pdocs

Quickstart: app-client - ear  failes:

INFO] Quickstart: messaging-clustering ................... SKIPPED

[INFO] ------------------------------------------------------------------------

[INFO] BUILD FAILURE

[INFO] ------------------------------------------------------------------------

[INFO] Total time:  01:07 min

[INFO] Finished at: 2019-03-02T10:59:42+01:00

[INFO] ------------------------------------------------------------------------

[ERROR] Failed to execute goal on project app-client-ear: Could not resolve dependencies for project org.wildfly.quickstarts:app-client-ear:ear:16.0.0.Final: The following artifacts could not be resolved: org.wildfly.quickstarts:app-client-client-simple:jar:16.0.0.Final, org.wildfly.quickstarts:app-client-ejb:jar:16.0.0.Final: Failure to find org.wildfly.quickstarts:app-client-client-simple:jar:16.0.0.Final in https://maven.repository.redhat.com/ga/ was cached in the local repository, resolution will not be reattempted until the update interval of jboss-enterprise-maven-repository has elapsed or updates are forced -> [Help 1]

[ERROR]

[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.

[ERROR] Re-run Maven using the -X switch to enable full debug logging.

mvn -v

Apache Maven 3.6.0 (97c98ec64a1fdfee7767ce5ffb20918da4f719f3; 2018-10-24T20:41:47+02:00)

Maven home: /apps/apache-maven-3.6.0

Java version: 11.0.2, vendor: Oracle Corporation, runtime: /usr/java/jdk-11.0.2

Default locale: de_DE, platform encoding: UTF-8

OS name: "linux", version: "4.12.14-lp150.12.48-default", arch: "amd64", family: "unix"

Do you have any idea what might be wrong?