OH3 [ERROR] [.core.karaf.internal.FeatureInstaller] - Failed installing 'openhab-binding-monopriceaudio

RPi 4
openjdk version “11.0.10” 2021-01-19 LTS
OpenJDK Runtime Environment Zulu11.45+27-CA (build 11.0.10+9-LTS)
OpenJDK Client VM Zulu11.45+27-CA (build 11.0.10+9-LTS, mixed mode)

Decided to build a Staging system so I could test without disturbing the Production system
Clean install using 3.1.0-M2
System initially came up fine so I configured a minimal Model. Then when I started installing Bindings I got errors.

[ERROR] [.core.karaf.internal.FeatureInstaller] - Failed installing 'openhab-binding-monopriceaudio, openhab-persistence-mapdb, openhab-persistence-rrd4j, openhab-ui-basic, openhab-binding-astro, openhab-ui-habpanel, openhab-binding-zwave': Error:
        Error downloading mvn:org.openhab.ui.bundles/org.openhab.ui.iconset.classic/3.0.0

I see others have had similar problems in OH2, so I tried numerous restarts and cleaned cache with no effect.

Tried reverting to 3.0.0 but also no effect.

Any ideas on where to look next?

what’s the best practice on deleting an installation and starting over?