Request failed: javax.jcr.RepositoryException: Inaccessible value (500)

[karjac14]

During installation and doing this...

$ cd aem-guides-wknd
$ mvn -PautoInstallPackage clean install

the installation runs but halfway it will have this error:

[INFO] Installing aem-guides-wknd.ui.apps (/Users/macbookname/Documents/projects/src/aem-guides-wknd/ui.apps/target/aem-guides-wknd.ui.apps-0.0.1-SNAPSHOT.zip) to http://localhost:4502/crx/packmgr/service.jsp
[ERROR] Request failed: javax.jcr.RepositoryException: Inaccessible value (500)
[INFO] Looks like the /Users/macbookname/Documents/projects/src/aem-guides-wknd/ui.apps/target/aem-guides-wknd.ui.apps-0.0.1-SNAPSHOT.zip package was not installed, checking the list...
....

the build would fail to this:

INFO] /Users/macbookname/Documents/projects/src/aem-guides-wknd/ui.apps/target/aem-guides-wknd.ui.apps-0.0.1-SNAPSHOT.zip package not installed, re-uploading it...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for aem-guides-wknd 0.0.1-SNAPSHOT:
[INFO]
[INFO] aem-guides-wknd .................................... SUCCESS [  0.292 s]
[INFO] WKND Site Project - Core ........................... SUCCESS [  6.924 s]
[INFO] WKND Site Project - UI apps ........................ FAILURE [ 34.308 s]
[INFO] WKND Site Project - UI content ..................... SKIPPED
[INFO] WKND Site Project - Integration Tests Bundles ...... SKIPPED
[INFO] WKND Site Project - Integration Tests Launcher ..... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  43.093 s
[INFO] Finished at: 2019-08-23T17:21:52+10:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.day.jcr.vault:content-package-maven-plugin:1.0.2:install (install-package) on project aem-guides-wknd.ui.apps: Error while installing package. Check log for details. -> [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.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <goals> -rf :aem-guides-wknd.ui.apps

what can I do to make this work? is this an internal error in dependencies?

I'm using AEM version 6.5 and Maven 3.6.1

The localhost port 4502 is live and I can actually see wknd project showing up under sites, but it empty. Looking at http://localhost:4502/crx/packmgr/index.jsp , only shows one wknd package: wknd-events.download-1.0.2.zip, I believe there should be other two... ui.apps and ui.contents