Routing Group Probe failed because no secondary replicas were assigned for one or more routing groups.
No secondary replica was assigned for a particular routing group. This can happen if multiple Servers went down at the same time and the Pool is in a permanent quorum loss state because some Servers needed to attain Quorum have not come online.
Ensure that all the Front-Ends configured for this Pool are up and running. If multiple Front-Ends have been recently decommissioned, run Reset-CsPoolRegistrarState -ResetType QuorumLossRecovery to enable the Pool to recover from Quorum Loss and make progress. Please run the Get-CsPoolFabricState cmdlet for more details on the failure.