What are the details of your problem?
How do you resolve a broken apart Maven Central and Shibboleth repositories? I'm unable to easily set Maven mirrors because hosted mirrors are hodgepodge of different groups. We're not in a position to ask again and they have not resolved them into a unified mirror repository.
ERROR Error executing Maven.
ERROR 8 problems were encountered while building the effective settings
[ERROR] 'mirrors.mirror.mirrorOf' for central is missing @ C:\Users\user\.m2\settings.xml
[ERROR] 'mirrors.mirror.mirrorOf' for central is missing @ C:\Users\user\.m2\settings.xml
[ERROR] 'mirrors.mirror.mirrorOf' for central is missing @ C:\Users\user\.m2\settings.xml
[ERROR] 'mirrors.mirror.mirrorOf' for central is missing @ C:\Users\user\.m2\settings.xml
[ERROR] 'mirrors.mirror.mirrorOf' for central is missing @ C:\Users\user\.m2\settings.xml
[ERROR] 'mirrors.mirror.mirrorOf' for central is missing @ C:\Users\user\.m2\settings.xml
[ERROR] 'mirrors.mirror.mirrorOf' for central is missing @ C:\Users\user\.m2\settings.xml
[ERROR] 'mirrors.mirror.mirrorOf' for central is missing @ C:\Users\user\.m2\settings.xml
What did you try and what were you expecting?
I tried providing just the repositories so Maven would check the repositories to find which to resolve to.
I gave the <mirrorOf>central</mirror> to tell Maven when central was split into multiple repositories so Maven could know which fractured repositories to parse through.
I've tried to use the main Sonatype Nexus Repository URL so that it'd self resolve. None of these worked, btw.
Non-resolvable import POM: Could not transfer artifact group.id:artifact.id:version.id from/to nexus (nexus.website): company.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target