An error occurred while removing availability group '%1!s!'. The DROP AVAILABILITY GROUP command removed the availability ...

An error occurred while removing availability group '%1!s!'. The DROP AVAILABILITY GROUP command removed the availability group configuration from the local metadata. However, the attempt to remove this configuration from the Windows Server Failover Clustering (WSFC) cluster failed because the AlwaysOn Availability Groups manager is not online (SQL Server error: %2!s!). To remove the availability group configuration from the WSFC cluster, re-enter the command.